Power determining method, user equipment, and base station

ABSTRACT

Embodiments of the present invention provide a power determining method, a user equipment, and a base station. The method includes: determining an initial transmit power of each transmission object in a transmission object set; when a sum of initial transmit powers of all the transmission objects in the transmission object set is greater than a maximum transmit power, performing a power reduction operation based on a priority sequence of information corresponding to the transmission objects, so as to acquire an available transmit power of each transmission object in the transmission object set, where a sum of available transmit powers of all the transmission objects in the transmission object set is not greater than the maximum transmit power; and sending each transmission object in the transmission object set according to the available transmit power corresponding to each transmission object in the transmission object set.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of International Patent ApplicationNo. PCT/CN2013/084072, filed on Sep. 24, 2013, which claims priority toInternational Patent Application No. PCT/CN2012/082489, filed on Sep.29, 2012, both of which are hereby incorporated by reference in theirentireties.

TECHNICAL FIELD

The present invention relates to the communications field, and morespecifically, to a power determining method, a user equipment, and abase station.

BACKGROUND

A Long Term Evolution-Advanced (“LTE-A” for short) system is anevolution and enhancement to a 3rd Generation Partnership Project(“3GPP” for short) Long Term Evolution (“LTE” for short) system. Acarrier aggregation (“CA” for short) technology, also known as aspectrum aggregation technology or a bandwidth extension technology, isintroduced in the LTE-A system, to ensure that a peak data rate providedby a fourth generation communications technology can satisfyrequirements of the International Telecommunication Union. In carrieraggregation, spectrums of two or more component carriers are aggregatedto achieve wider transmission bandwidth, where the spectrums of thecomponent carriers may be contiguous continuous spectrums, or may benon-contiguous spectrums within a same frequency band or evendiscontinuous spectrums in different frequency bands. An LTE Rel-8/9user equipment (“UE” for short) can access only one of the componentcarriers to receive and send data; whereas, an LTE-A user equipment cansimultaneously access multiple component carriers according to itscapability and service requirement to receive and send data.

To support technologies such as dynamic scheduling, downlink multipleinput multiple output (“MIMO” for short) transmission, and hybridautomatic repeat request, a terminal needs to feed back multiple typesof uplink control information (“UCI” for short), including channel stateinformation (“CSI” for short), hybrid automatic repeat request (“HARQ”for short) information, a scheduling request (“SR” for short), and thelike, to a base station through a physical uplink control channel(“PUCCH” for short) and a physical uplink shared channel (“PUSCH” forshort), where the hybrid automatic repeat request information may besimply called acknowledgment (“ACK” for short)/negative acknowledgment(“NACK” for short), or the hybrid automatic repeat request informationmay be called hybrid automatic repeat request acknowledgment HARQ-ACK.

However, in a CA system between base stations, because data schedulingof multiple downlink carriers is independently performed by each basestation, which means that uplink control information (“UCI” for short)of each carrier is separately fed back to a base station of eachcarrier. In which case, a UE may have to transmit UCI on multiplecarriers, for example, multiple PUCCHs are simultaneously transmitted ormultiple PUSCHs carrying UCI are transmitted. Total transmit power ofall to-be-transmitted uplink channels and/or sounding reference signals(“SRS” for short) exceeds maximum transmit power of the user equipment,and consequently, the user equipment cannot send information properly.

SUMMARY

Embodiments of the present invention provide a power determining method,a user equipment, and a base station, which can solve the problem inwhich a sum of transmit powers of transmission objects of a userequipment is greater than a maximum transmit power of the userequipment.

According to a first aspect, a power determining method is provided andincludes:

determining an initial transmit power of each transmission object in atransmission object set, where the transmission object set includes allto-be-transmitted uplink channels and/or sounding reference signalsSRSs;

when a sum of initial transmit powers of all the transmission object inthe transmission object set is greater than a maximum transmit power,performing a power reduction operation based on a priority sequence ofinformation corresponding to a transmission object, so as to acquire anavailable transmit power of each transmission object in the transmissionobject set, wherein a sum of the available transmit powers of all thetransmission objects in the transmission object set is not greater thanthe maximum transmit power; and

sending each transmission object in the transmission object setaccording to the available transmit power corresponding to eachtransmission object in the transmission object set.

With reference to the first aspect, in a first possible implementationof the first aspect, the priority sequence of the informationcorresponding to a transmission object includes at least one of thefollowing:

a priority sequence of a type of a transmission object, a prioritysequence of UCI carried in a transmission object, and a prioritysequence of a carrier corresponding to a transmission object.

With reference to the first possible implementation of the first aspect,in a second possible implementation of the first aspect, the prioritysequence of a type of a transmission object includes at least one of thefollowing:

when a physical random access channel PRACH exists, the PRACH has ahighest priority;

when a physical uplink control channel PUCCH and a physical uplinkshared channel PUSCH coexist, a priority of the PUCCH is higher than apriority of the PUSCH, or a priority of the PUCCH is higher than apriority of a PUSCH not carrying UCI and is the same as a priority of aPUSCH carrying UCI;

when a PUSCH carrying uplink control information UCI and a PUSCH notcarrying UCI coexist, a priority of the PUSCH carrying UCI is higherthan a priority of the PUSCH not carrying UCI; and

when a PRACH, a PUCCH, a PUSCH, and an SRS coexist, the SRS has a lowestpriority.

With reference to the first possible implementation of the first aspector the second possible implementation of the first aspect, in a thirdpossible implementation of the first aspect, the priority sequence ofUCI carried in a transmission object includes at least one of thefollowing:

when channel state information and a scheduling request exist, apriority of the channel state information is lower than a priority ofthe scheduling request; and

when hybrid automatic repeat request information and a schedulingrequest exist, a priority of the hybrid automatic repeat requestinformation is higher than or equal to a priority of the schedulingrequest.

With reference to the third possible implementation of the first aspect,in a fourth possible implementation of the first aspect, the prioritysequence of UCI carried in a transmission object includes at least oneof the following:

when channel state information exists and the channel state informationincludes a channel quality indicator and a precoding matrix, a priorityof the channel quality indicator is equal to a priority of the precodingmatrix; and

when channel state information exists and the channel state informationincludes a rank indicator, a channel quality indicator, and a precodingmatrix, the rank indicator has a highest priority.

With reference to any one of the first to the fourth possibleimplementations of the first aspect, in a fifth possible implementationof the first aspect, the priority sequence of the carriers correspondingto a transmission object includes at least one of the following:

a priority sequence determined based on a index sequence number of thecarrier, a carrier priority sequence configured by an upper layer, apriority sequence determined based on a duplex mode of the carrier, apriority sequence determined based on a radio resource control (RRC)connection state of a carrier, and a priority sequence determined basedon a transmission point corresponding to a carrier.

With reference to the fifth possible implementation of the first aspect,in a sixth possible implementation of the first aspect, the prioritysequence determined based on the RRC connection state of the carrierincludes at least one of the following:

a priority of a carrier supporting RRC connection is higher than apriority of a carrier not supporting RRC connection; and a priority of acarrier carrying RRC information is higher than a priority of a carriernot carrying RRC information.

With reference to the fifth or the sixth possible implementation of thefirst aspect, in a seventh possible implementation of the first aspect,the priority sequence determined based on the duplex mode of the carrierincludes that: a priority of a carrier whose duplex mode is frequencydivision duplex FDD is lower than a priority of a carrier whose duplexmode is time division TDD.

With reference to the first aspect, in an eighth possible implementationof the first aspect, the priority sequence of the informationcorresponding to a transmission object includes at least one of thefollowing:

a priority of a PUCCH transmitted on a carrier whose duplex mode is FDDis lower than a priority of a PUCCH transmitted on a carrier whoseduplex mode is TDD, and both the PUCCH transmitted on the FDD carrierand the PUCCH transmitted on the TDD carrier carry hybrid automaticrepeat request information; and

a priority of a PUCCH transmitted on a carrier whose duplex mode is FDDis lower than a priority of a PUSCH that carries UCI and is transmittedon a carrier whose duplex mode is TDD, where the UCI in the UCI-carryingPUSCH transmitted on the TDD carrier includes hybrid automatic repeatrequest information.

With reference to the first aspect, the first possible implementation ofthe first aspect, the second possible implementation of the firstaspect, the third possible implementation of the first aspect, thefourth possible implementation of the first aspect, the fifth possibleimplementation of the first aspect, the sixth possible implementation ofthe first aspect, or the seventh possible implementation of the firstaspect, in a ninth possible implementation of the first aspect, theperforming a power reduction operation based on a priority sequence ofinformation corresponding to a transmission object includes:

determining a priority of each transmission object in the transmissionobject set according to the priority sequence of the informationcorresponding to a transmission object and corresponding information ofeach transmission object in the transmission object set; and

performing the power reduction operation according to the priority ofeach transmission object in the transmission object set.

With reference to the ninth possible implementation of the first aspect,in a tenth possible implementation of the first aspect, the determininga priority of each transmission object in the transmission object setaccording to the priority sequence of the information corresponding tothe transmission object and corresponding information of eachtransmission object in the transmission object set includes:

determining some of the transmission objects have a same priority afteraccording to a priority sequence of a type of a transmission object anda type of each transmission object in the transmission object set,wherein the priority sequence of a type of a transmission object iscomprised in the priority sequence of the information corresponding tothe transmission objects; and

when some of the transmission objects have a same priority after thepriority of the each transmission object in the transmission object setis determined according to a priority sequence of a type of atransmission object and a type of the each transmission object in thetransmission object set, determining a priority of each transmissionobject in same-priority transmission objects according to a prioritysequence of UCI carried in a transmission object and UCI of eachtransmission object in the same-priority transmission objects, whereinthe priority sequence of the UCI carried in the transmission object iscomprised in the priority sequence of the information corresponding tothe transmission objects, or

determining a priority of each transmission object in same-prioritytransmission objects according to a priority sequence of a carriercorresponding to a transmission object and a carrier corresponding toeach transmission object in the same-priority transmission objects,wherein the priority sequence of the carrier corresponding to thetransmission object is comprised in the priority sequence of theinformation corresponding to the transmission objects.

With reference to the ninth possible implementation of the first aspector the tenth possible implementation of the first aspect, in an eleventhpossible implementation of the first aspect, the performing the powerreduction operation according to the priority of each transmissionobject in the transmission object set includes:

performing the power reduction operation for the transmission objects inthe transmission object set one by one according to the priorities ofthe transmission objects, with a transmission object of a lowestpriority being the first to undergo the power reduction, until a sum ofacquired available transmit powers of all the transmission objects inthe transmission object set is less than or equal to the maximumtransmit power.

With reference to the eleventh possible implementation of the firstaspect, in a twelfth possible implementation of the first aspect, whenperforming the power reduction for the transmission objects in thetransmission object set one by one according to the priorities of thetransmission objects, with a transmission object of a lowest prioritybeing the first to undergo the power reduction, it is satisfied that ifan available transmit power for a priority of n is not 0, an availabletransmit power of a transmission object with a priority of n+1 is equalto an initial transmit power of the transmission object with thepriority of n+1, where m is the number of transmission objects in thetransmission object set, m≧n≧1, and a transmission object with apriority of 1 has a lowest priority.

With reference to the ninth possible implementation of the first aspect,the tenth possible implementation of the first aspect, the eleventhpossible implementation of the first aspect, or the twelfth possibleimplementation of the first aspect, in a thirteenth possibleimplementation of the first aspect, the performing the power reductionoperation according to the priority of each transmission object in thetransmission object set includes:

when multiple transmission objects have a same priority, performingequal power reduction for the multiple transmission objects that havethe same priority.

According to a second aspect, a power determining method is provided andincludes:

determining a first transmission object set, where the firsttransmission object set includes all to-be-transmitted uplink channelsand/or sounding reference signals SRSs of a user equipment

when it is determined that a sum of transmit powers of all transmissionobjects in the first transmission object set is greater than a maximumtransmit power of the user equipment, performing a power reductionoperation based on a priority sequence of information corresponding tothe transmission objects, so as to acquire an available transmit powerof each transmission object in the first transmission object set, wherea sum of available transmit powers of all the transmission objects inthe first transmission object set is less than or equal to the maximumtransmit power of the user equipment;

determining, from the first transmission object set and according to theavailable transmit power of each transmission object in the firsttransmission object set, a second transmission object set that needs tobe scheduled, where an available transmit power of a transmission objectin the second transmission object set is not 0; and

performing scheduling for the user equipment according to the secondtransmission object set.

With reference to the second aspect, in a first possible implementationof the second aspect, the priority sequence of the informationcorresponding to a transmission object includes at least one of thefollowing:

a priority sequence of a type of a transmission object, a prioritysequence of uplink control information UCI carried in a transmissionobject, and a priority sequence of a carrier corresponding to atransmission object.

With reference to the second aspect or the first possible implementationof the second aspect, in a second possible implementation of the secondaspect, the performing a power reduction operation based on a prioritysequence of information corresponding to the transmission objectsincludes:

determining a priority of each transmission object in the firsttransmission object set according to the priority sequence of theinformation corresponding to a transmission object and correspondinginformation of each transmission object in the first transmission objectset; and

performing the power reduction operation according to the priority ofeach transmission object in the first transmission object set.

With reference to the second possible implementation of the secondaspect, in a third possible implementation of the second aspect, theperforming the power reduction operation according to the priority ofeach transmission object in the first transmission object set includes:

performing the power reduction operation for the transmission objects inthe first transmission object set one by one according to the prioritiesof the transmission objects, with a transmission object of a lowestpriority being the first to undergo the power reduction, until a sum ofacquired available transmit powers of all the transmission objects inthe first transmission object set is less than or equal to the maximumtransmit power.

With reference to the third possible implementation of the secondaspect, in a fourth possible implementation of the second aspect, whenperforming the power reduction for the transmission objects in the firsttransmission object set one by one according to the priorities of thetransmission objects, with a transmission object of a lowest prioritybeing the first to undergo the power reduction, it is satisfied that ifan available transmit power for a priority of n is not 0, an availabletransmit power of a transmission object with a priority of n+1 is equalto an initial transmit power of the transmission object with thepriority of n+1, where m is the number of transmission objects in thefirst transmission object set, m≧n≧1, and a transmission object with apriority of 1 has a lowest priority.

With reference to the second possible implementation of the secondaspect, the third possible implementation of the second aspect, or thefourth possible implementation of the second aspect, in a fifth possibleimplementation of the second aspect, the performing the power reductionoperation according to the priority of each transmission object in thetransmission object set includes:

when multiple transmission objects have a same priority, performingequal power reduction for the multiple transmission objects that havethe same priority.

According to a third aspect, a user equipment is provided and includes:

an acquiring unit, configured to acquire an initial transmit power ofeach transmission object in a transmission object set, wherein thetransmission object set comprises all to-be-transmitted uplink channelsand/or sounding reference signals SRSs, and configured to acquire amaximum transmit power and acquire a priority sequence of informationcorresponding to a transmission object;

a power reducing unit, configured to: when a sum of initial transmitpowers acquired by the acquiring unit for all the transmission objectsin the transmission object set is greater than the maximum transmitpower, perform a power reduction operation based on the prioritysequence acquired by the acquiring unit for the informationcorresponding to a transmission object, so as to acquire an availabletransmit power of each transmission object in the transmission objectset, wherein a sum of available transmit powers of all the transmissionobjects in the transmission object set is not greater than the maximumtransmit power; and

a sending unit, configured to send each transmission object in thetransmission object set according to the available transmit power thatis acquired by the power reducing unit and is corresponding to eachtransmission object in the transmission object set.

With reference to the third aspect, in a first possible implementationof the third aspect, the acquiring unit is specifically configured to:

acquire the priority sequence of the information corresponding to thetransmission object, wherein the priority sequence of the informationcorresponding to the transmission object comprises at least one of thefollowing: a priority sequence of a type of the transmission object, apriority sequence of UCI carried in the transmission object, and apriority sequence of a carrier corresponding to a transmission object.

With reference to the first possible implementation of the third aspect,in a second possible implementation of the third aspect, the acquiringunit is specifically configured to acquire the priority sequence of atype of a transmission object, wherein the priority sequence of the typeof the transmission object includes at least one of the following:

when a physical random access channel PRACH exists, the PRACH has ahighest priority;

when a physical uplink control channel PUCCH and a physical uplinkshared channel PUSCH coexist, a priority of the PUCCH is higher than apriority of the PUSCH, or a priority of the PUCCH is higher than apriority of a PUSCH not carrying UCI and is the same as a priority of aPUSCH carrying UCI;

when a PUSCH carrying uplink control information UCI and a PUSCH notcarrying UCI coexist, a priority of the PUSCH carrying UCI is higherthan a priority of the PUSCH not carrying UCI; and

when a PRACH, a PUCCH, a PUSCH, and an SRS coexist, the SRS has a lowestpriority.

With reference to the first possible implementation of the third aspector the second possible implementation of the third aspect, in a thirdpossible implementation of the third aspect, the acquiring unit isspecifically configured to acquire the priority sequence of the UCIcarried in the transmission object, wherein the priority sequence of theUCI carried in the transmission object includes at least one of thefollowing:

when channel state information and a scheduling request exist, apriority of the channel state information is lower than a priority ofthe scheduling request; and

when hybrid automatic repeat request information and a schedulingrequest exist, a priority of the hybrid automatic repeat requestinformation is higher than or equal to a priority of the schedulingrequest.

With reference to the third possible implementation of the third aspect,in a fourth possible implementation of the third aspect, the acquiringunit is specifically configured to acquire the priority sequence of theUCI carried in the transmission object, wherein the priority sequence ofthe UCI carried in the transmission object includes at least one of thefollowing:

when channel state information exists and the channel state informationincludes a channel quality indicator and a precoding matrix, a priorityof the channel quality indicator is equal to a priority of the precodingmatrix; and

when channel state information exists and the channel state informationincludes a rank indicator, a channel quality indicator, and a precodingmatrix, the rank indicator has a highest priority.

With reference to any one of the first to the fourth possibleimplementations of the third aspect, in a fifth possible implementationof the third aspect, the acquiring unit is specifically configured toacquire the priority sequence of the carrier corresponding to thetransmission object, wherein the priority sequence of the carriercorresponding to the transmission object includes at least one of thefollowing:

a priority sequence determined based on a index sequence number of thecarrier, a carrier priority sequence configured by an upper layer, apriority sequence determined based on a duplex mode of the carrier, apriority sequence determined based on a radio resource control RRCconnection state of a carrier, and a priority sequence determined basedon a transmission point corresponding to a carrier.

With reference to the fifth possible implementation of the third aspect,in a sixth possible implementation of the third aspect, the acquiringunit is specifically configured to acquire the priority sequencedetermined based on the RRC connection state of the carrier, wherein thepriority sequence determined based on the RRC connection state of thecarrier includes at least one of the following:

a priority of a carrier supporting RRC connection is higher than apriority of a carrier not supporting RRC connection; and a priority of acarrier carrying RRC information is higher than a priority of a carriernot carrying RRC information.

With reference to the fifth or the sixth possible implementation of thethird aspect, in a seventh possible implementation of the third aspect,the acquiring unit is specifically configured to acquire the prioritysequence determined based on the duplex modes of the carriers, where thepriority sequence determined based on the duplex modes of the carriersincludes that:

a priority of a carrier whose duplex mode is frequency division duplexFDD is lower than a priority of a carrier whose duplex mode is timedivision TDD.

With reference to the third aspect, in an eighth possible implementationof the third aspect, the acquiring unit is specifically configured toacquire the priority sequence of the information corresponding to thetransmission object, wherein the priority sequence of the informationcorresponding to the transmission object includes at least one of thefollowing:

a priority of a PUCCH transmitted on a carrier whose duplex mode is FDDis lower than a priority of a PUCCH transmitted on a carrier whoseduplex mode is TDD, and both the PUCCH transmitted on the carrier whoseduplex mode is FDD and the PUCCH transmitted on the carrier carry hybridautomatic repeat request information; and

a priority of a PUCCH transmitted on a carrier whose duplex mode is FDDis lower than a priority of a PUSCH that carries UCI and is transmittedon a carrier whose duplex mode is TDD, where the UCI in the UCI-carryingPUSCH transmitted on the TDD carrier includes hybrid automatic repeatrequest information.

With reference to the third aspect, the first possible implementation ofthe third aspect, the second possible implementation of the thirdaspect, the third possible implementation of the third aspect, thefourth possible implementation of the third aspect, the fifth possibleimplementation of the third aspect, the sixth possible implementation ofthe third aspect, or the seventh possible implementation of the thirdaspect, in a ninth possible implementation of the third aspect, thepower reducing unit includes:

a determining subunit, configured to determine a priority of eachtransmission object in the transmission object set according to thepriority sequence of the information corresponding to the transmissionobject and corresponding information of each transmission object in thetransmission object set; and

a power reducing subunit, configured to perform the power reductionoperation according to the priority determined by the determiningsubunit for each transmission object in the transmission object set.

With reference to the ninth possible implementation of the third aspect,in a tenth possible implementation of the third aspect, the determiningsubunit is specifically configured to:

determine the priority of each transmission object in the transmissionobject set according to the priority sequence of the type of thetransmission object and a type of each transmission object in thetransmission object set, wherein the priority sequence of the type ofthe transmission object is comprised in the priority sequence of theinformation corresponding to the transmission objects; and

when some of the transmission objects have a same priority after thepriority of the each transmission object in the transmission object setis determined according to a priority sequence of a type of atransmission object and a type of the each transmission object in thetransmission object set, determine a priority of each transmissionobject in same-priority transmission objects according to a prioritysequence of UCI carried in a transmission object and UCI of eachtransmission object in the same-priority transmission objects, whereinthe priority sequence of the UCI carried in the transmission object iscomprised in the priority sequence of the information corresponding tothe transmission objects, or

determine a priority of each transmission object in same-prioritytransmission objects according to a priority sequence of a carriercorresponding to a transmission object and a carrier corresponding toeach transmission object in the same-priority transmission objects,wherein the priority sequence of the carrier corresponding to thetransmission object is comprised in the priority sequence of theinformation corresponding to the transmission objects.

With reference to the ninth possible implementation of the third aspector the tenth possible implementation of the third aspect, in an eleventhpossible implementation of the third aspect, the power reducing subunitis specifically configured to:

perform the power reduction operation for the transmission objects inthe transmission object set one by one according to the priorities ofthe transmission objects, with a transmission object of a lowestpriority being the first to undergo the power reduction, until a sum ofacquired available transmit powers of all the transmission objects inthe transmission object set is less than or equal to the maximumtransmit power.

With reference to the eleventh possible implementation of the thirdaspect, in a twelfth possible implementation of the third aspect, thepower reducing subunit is specifically configured to:

perform the power reduction operation for the transmission objects inthe transmission object set one by one according to the priorities ofthe transmission objects, with a transmission object of a lowestpriority being the first to undergo the power reduction, until the sumof the acquired available transmit powers of all the transmissionobjects in the transmission object set is less than or equal to themaximum transmit power, where when performing the power reduction forthe transmission objects in the transmission object set one by oneaccording to the priorities of the transmission objects, with atransmission object of a lowest priority being the first to undergo thepower reduction, it is satisfied that if an available transmit power fora priority of n is not 0, an available transmit power of a transmissionobject with a priority of n+1 is equal to an initial transmit power ofthe transmission object with the priority of n+1, where m is the numberof transmission objects in the transmission object set, m≧n≧1, and atransmission object with a priority of 1 has a lowest priority.

With reference to the ninth possible implementation of the third aspect,the tenth possible implementation of the third aspect, the eleventhpossible implementation of the third aspect, or the twelfth possibleimplementation of the third aspect, in a thirteenth possibleimplementation of the third aspect, the power reducing subunit isspecifically configured to:

when multiple transmission objects have a same priority, perform equalpower reduction for the multiple transmission objects that have the samepriority.

According to a fourth aspect, a base station is provided and includes:

an acquiring unit, configured to acquire a first transmission objectset, where the first transmission object set includes allto-be-transmitted uplink channels and/or sounding reference signals SRSsof a user equipment, and configured to acquire a maximum transmit powerof the user equipment and acquire a priority sequence of informationcorresponding to the transmission objects;

a power reducing unit, configured to: when a sum of transmit powersacquired by the acquiring unit for all the transmission objects in thefirst transmission object set is greater than the maximum transmit powerof the user equipment, perform a power reduction operation based on thepriority sequence of the information corresponding to the transmissionobjects, so as to acquire an available transmit power of eachtransmission object in the first transmission object set, where a sum ofavailable transmit powers of all the transmission objects in the firsttransmission object set is less than or equal to the maximum transmitpower of the user equipment;

a determining unit, configured to determine, from the first transmissionobject set and according to the available transmit power acquired by thepower reducing unit for each transmission object in the firsttransmission object set, a second transmission object set that needs tobe scheduled, where an available transmit power of a transmission objectin the second transmission object set is not 0; and

a scheduling unit, configured to perform scheduling for the userequipment according to the second transmission object set determined bythe determining unit.

With reference to the fourth aspect, in a first possible implementationof the fourth aspect, the acquiring unit is specifically configured to:

acquire the priority sequence of the information corresponding to thetransmission objects, wherein the priority sequence of the informationcorresponding to the transmission objects comprises at least one of thefollowing: a priority sequence of a type of a transmission object, apriority sequence of uplink control information UCI carried in atransmission object, and a priority sequence of a carrier correspondingto a transmission object.

With reference to the fourth aspect or the first possible implementationof the fourth aspect, in a second possible implementation of the fourthaspect, the power reducing unit includes:

a determining subunit, configured to determine a priority of eachtransmission object in the first transmission object set according tothe priority sequence of the information corresponding to thetransmission objects and corresponding information of each transmissionobject in the first transmission object set; and

a power reducing subunit, configured to perform the power reductionoperation according to the priority determined by the determiningsubunit for each transmission object in the first transmission objectset.

With reference to the second possible implementation of the fourthaspect, in a third possible implementation of the fourth aspect, thepower reducing subunit is specifically configured to:

perform the power reduction operation for the transmission objects inthe first transmission object set one by one according to the prioritiesof the transmission objects, with a transmission object of a lowestpriority being the first to undergo the power reduction, until a sum ofacquired available transmit powers of all the transmission objects inthe first transmission object set is less than or equal to the maximumtransmit power.

With reference to the third possible implementation of the fourthaspect, in a fourth possible implementation of the fourth aspect, thepower reducing subunit is specifically configured to:

perform the power reduction operation for the transmission objects inthe first transmission object set one by one according to the prioritiesof the transmission objects, with a transmission object of a lowestpriority being the first to undergo the power reduction, until the sumof the acquired available transmit powers of all the transmissionobjects in the first transmission object set is less than or equal tothe maximum transmit power, where when performing the power reductionfor the transmission objects in the first transmission object set one byone according to the priorities of the transmission objects, with atransmission object of a lowest priority being the first to undergo thepower reduction, it is satisfied that if an available transmit power fora priority of n is not 0, an available transmit power of a transmissionobject with a priority of n+1 is equal to an initial transmit power ofthe transmission object with the priority of n+1, where m is the numberof transmission objects in the first transmission object set, m≧n≧1, anda transmission object with a priority of 1 has a lowest priority.

According to a fifth aspect, a user equipment is provided and includes:

a processor, configured to acquire an initial transmit power of eachtransmission object in a transmission object set, and acquire a prioritysequence of information corresponding to the transmission objects and amaximum transmit power, wherein the transmission object set comprisesall to-be-transmitted uplink channels and/or sounding reference signalsSRSs; when a sum of initial transmit powers of all the transmissionobjects in the transmission object set is greater than the maximumtransmit power, perform a power reduction operation based on thepriority sequence of the information corresponding to a transmissionobject, so as to acquire an available transmit power of eachtransmission object in the transmission object set, wherein a sum ofavailable transmit powers of all the transmission objects in thetransmission object set is not greater than the maximum transmit power;and

a sender, configured to send each transmission object in thetransmission object set according to the available transmit power thatis acquired by the processor and is corresponding to each transmissionobject in the transmission object set.

According to the fifth aspect, in a first possible implementation of thefifth aspect, the processor is specifically configured to:

acquire the priority sequence of the information corresponding to thetransmission object, wherein the priority sequence of the informationcorresponding to the transmission object comprises at least one of thefollowing: a priority sequence of a type of a transmission object, apriority sequence of UCI carried in a transmission object, and apriority sequence of a carrier corresponding to a transmission object.

With reference to the first possible implementation of the fifth aspect,in a second possible implementation of the fifth aspect, the processoris specifically configured to acquire the priority sequence of a type ofa transmission object, wherein the priority sequence of the type of thetransmission object includes at least one of the following:

when a physical random access channel PRACH exists, the PRACH has ahighest priority;

when a physical uplink control channel PUCCH and a physical uplinkshared channel PUSCH coexist, a priority of the PUCCH is higher than apriority of the PUSCH, or a priority of the PUCCH is higher than apriority of a PUSCH not carrying UCI and is the same as a priority of aPUSCH carrying UCI;

when a PUSCH carrying uplink control information UCI and a PUSCH notcarrying UCI coexist, a priority of the PUSCH carrying UCI is higherthan a priority of the PUSCH not carrying UCI; and

when a PRACH, a PUCCH, a PUSCH, and an SRS coexist, the SRS has a lowestpriority.

With reference to the first possible implementation of the fifth aspector the second possible implementation of the fifth aspect, in a thirdpossible implementation of the fifth aspect, the processor isspecifically configured to:

acquire the priority sequence of the UCI carried in the transmissionobject, wherein the priority sequence of the UCI carried in thetransmission object includes at least one of the following:

when channel state information and a scheduling request exist, apriority of the channel state information is lower than a priority ofthe scheduling request; and

when hybrid automatic repeat request information and a schedulingrequest exist, a priority of the hybrid automatic repeat requestinformation is higher than or equal to a priority of the schedulingrequest.

With reference to the third possible implementation of the fifth aspect,in a fourth possible implementation of the fifth aspect, the processoris specifically configured to: acquire the priority sequence of the UCIcarried in the transmission object, wherein the priority sequence of theUCI carried in the transmission object includes at least one of thefollowing:

when channel state information exists and the channel state informationincludes a channel quality indicator and a precoding matrix, a priorityof the channel quality indicator is equal to a priority of the precodingmatrix; and

when channel state information exists and the channel state informationincludes a rank indicator, a channel quality indicator, and a precodingmatrix, the rank indicator has a highest priority.

With reference to the first possible implementation of the fifth aspect,the second possible implementation of the fifth aspect, the thirdpossible implementation of the fifth aspect, or the fourth possibleimplementation of the fifth aspect, in a fifth possible implementationof the fifth aspect, the processor is specifically configured to acquirethe priority sequence of the carrier corresponding to the transmissionobject, wherein the priority sequence of the carrier corresponding tothe transmission object comprises at least one of the following: apriority sequence determined based on a index sequence number of acarriers, a carrier priority sequence configured by an upper layer, apriority sequence determined based on a duplex mode of a carrier, apriority sequence determined based on a radio resource control RRCconnection state of a carriers, and a priority sequence determined basedon a transmission point corresponding to a carrier.

With reference to the fifth possible implementation of the fifth aspect,in a sixth possible implementation of the fifth aspect, the processor isspecifically configured to acquire the priority sequence determinedbased on the RRC connection state of the carrier, wherein the prioritysequence determined based on the RRC connection state of the carrierincludes at least one of the following:

a priority of a carrier supporting RRC connection is higher than apriority of a carrier not supporting RRC connection; and a priority of acarrier carrying RRC information is higher than a priority of a carriernot carrying RRC information.

With reference to the fifth or the sixth possible implementation of thefifth aspect, in a seventh possible implementation of the fifth aspect,the processor is specifically configured to acquire the prioritysequence determined based on the duplex mode of the carrier, wherein thepriority sequence determined based on the duplex mode of the carriercomprises that a priority of a carrier whose duplex mode is frequencydivision duplex FDD is lower than a priority of a carrier whose duplexmode is time division TDD.

With reference to the fifth aspect, in an eighth possible implementationof the fifth aspect, the processor is specifically configured to acquirethe priority sequence of the information corresponding to thetransmission object, wherein the priority sequence of the informationcorresponding to the transmission object includes at least one of thefollowing:

a priority of a PUCCH transmitted on a carrier whose duplex mode is FDDis lower than a priority of a PUCCH transmitted on a carrier whoseduplex mode is TDD, and both the PUCCH transmitted on the FDD carrierand the PUCCH transmitted on the TDD carrier carry hybrid automaticrepeat request information; and

a priority of a PUCCH transmitted on a carrier whose duplex mode is FDDis lower than a priority of a PUSCH that carries UCI and is transmittedon a carrier whose duplex mode is TDD, where the UCI in the UCI-carryingPUSCH transmitted on the TDD carrier includes hybrid automatic repeatrequest information.

With reference to the fifth aspect, the first possible implementation ofthe fifth aspect, the second possible implementation of the fifthaspect, the third possible implementation of the fifth aspect, thefourth possible implementation of the fifth aspect, the fifth possibleimplementation of the fifth aspect, the sixth possible implementation ofthe fifth aspect, or the seventh possible implementation of the fifthaspect, in a ninth possible implementation of the fifth aspect, theprocessor is specifically configured to:

determine a priority of each transmission object in the transmissionobject set according to the priority sequence of the informationcorresponding to the transmission objects and corresponding informationof each transmission object in the transmission object set, and performthe power reduction operation according to the priority of eachtransmission object in the transmission object set.

With reference to the ninth possible implementation of the fifth aspect,in a tenth possible implementation of the fifth aspect, the processor isspecifically configured to:

determine the priority of each transmission object in the transmissionobject set according to a priority sequence of a type of a transmissionobject and a type of each transmission object in the transmission objectset, wherein the priority sequence of the type of the transmissionobject is comprised in the priority sequence of the informationcorresponding to the transmission object; and

when some of the transmission objects have a same priority after thepriority of the each transmission object in the transmission object setis determined according to a priority sequence of a type of atransmission object and a type of the each transmission object in thetransmission object set, determine a priority of each transmissionobject in same-priority transmission objects according to a prioritysequence of UCI carried in a transmission object and UCI of eachtransmission object in the same-priority transmission objects, whereinthe priority sequence of the UCI carried in the transmission object iscomprised in the priority sequence of the information corresponding tothe transmission objects, or

determine a priority of each transmission object in same-prioritytransmission objects according to a priority sequence of a carriercorresponding to a transmission object and a carrier corresponding toeach transmission object in the same-priority transmission objects,wherein the priority sequence of the carrier corresponding to thetransmission object is comprised in the priority sequence of theinformation corresponding to the transmission objects.

With reference to the ninth possible implementation of the fifth aspector the tenth possible implementation of the fifth aspect, in an eleventhpossible implementation of the fifth aspect, the processor isspecifically configured to:

perform the power reduction operation for the transmission objects inthe transmission object set one by one according to the priorities ofthe transmission objects, with a transmission object of a lowestpriority being the first to undergo the power reduction, until a sum ofacquired available transmit powers of all the transmission objects inthe transmission object set is less than or equal to the maximumtransmit power.

With reference to the eleventh possible implementation of the fifthaspect, in a twelfth possible implementation of the fifth aspect, theprocessor is specifically configured to:

perform the power reduction operation for the transmission objects inthe transmission object set one by one according to the priorities ofthe transmission objects, with a transmission object of a lowestpriority being the first to undergo the power reduction, until the sumof the acquired available transmit powers of all the transmissionobjects in the transmission object set is less than or equal to themaximum transmit power, where when performing the power reduction forthe transmission objects in the transmission object set one by oneaccording to the priorities of the transmission objects, with atransmission object of a lowest priority being the first to undergo thepower reduction, it is satisfied that if an available transmit power fora priority of n is not 0, an available transmit power of a transmissionobject with a priority of n+1 is equal to an initial transmit power ofthe transmission object with the priority of n+1, where m is the numberof transmission objects in the transmission object set, m≧n≧1, and atransmission object with a priority of 1 has a lowest priority.

With reference to the ninth possible implementation of the fifth aspect,the tenth possible implementation of the fifth aspect, the eleventhpossible implementation of the fifth aspect, or the twelfth possibleimplementation of the fifth aspect, in a thirteenth possibleimplementation of the fifth aspect, the processor is specificallyconfigured to:

when multiple transmission objects have a same priority, perform equalpower reduction for the multiple transmission objects that have the samepriority.

According to a sixth aspect, a base station is provided and includes:

a processor, configured to acquire a first transmission object set,where the first transmission object set includes all to-be-transmitteduplink channels and/or sounding reference signals SRSs of a userequipment, and to acquire a maximum transmit power of the user equipmentand a priority sequence of information corresponding to the transmissionobjects; configured to: when a sum of transmit powers of all thetransmission objects in the first transmission object set is greaterthan the maximum transmit power of the user equipment, perform a powerreduction operation based on the priority sequence of the informationcorresponding to the transmission objects, so as to acquire an availabletransmit power of each transmission object in the first transmissionobject set, where a sum of available transmit powers of all thetransmission objects in the first transmission object set is less thanor equal to the maximum transmit power of the user equipment; configuredto determine, from the first transmission object set and according tothe available transmit power of each transmission object in the firsttransmission object set, a second transmission object set that needs tobe scheduled, where an available transmit power of a transmission objectin the second transmission object set is not 0; and configured todetermine scheduling information according to the second transmissionobject set; and

a sender, configured to send the scheduling information to the userequipment, so that the user equipment receives or sends data accordingto the scheduling.

With reference to the sixth aspect, in a first possible implementationof the sixth aspect, the processor is specifically configured to:

acquire the priority sequence of the information corresponding to thetransmission objects, wherein the priority sequence of the informationcorresponding to the transmission objects comprises at least one of thefollowing: a priority sequence of a type of a transmission object, apriority sequence of uplink control information UCI carried in atransmission object, and a priority sequence of a carrier correspondingto a transmission object.

With reference to the sixth aspect or the first possible implementationof the sixth aspect, in a second possible implementation of the sixthaspect, the processor is specifically configured to:

determine a priority of each transmission object in the firsttransmission object set according to the priority sequence of theinformation corresponding to a transmission object and correspondinginformation of each transmission object in the first transmission objectset; and

perform the power reduction operation according to the priority of eachtransmission object in the first transmission object set.

With reference to the second possible implementation of the sixthaspect, in a third possible implementation of the sixth aspect, theprocessor is configured to: perform the power reduction operation forthe transmission objects in the first transmission object set one by oneaccording to the priorities of the transmission objects, with atransmission object of a lowest priority being the first to undergo thepower reduction, until a sum of acquired available transmit powers ofall the transmission objects in the first transmission object set isless than or equal to the maximum transmit power.

With reference to the third possible implementation of the sixth aspect,in a fourth possible implementation of the sixth aspect, the processoris specifically configured to:

perform the power reduction operation for the transmission objects inthe first transmission object set one by one according to the prioritiesof the transmission objects, with a transmission object of a lowestpriority being the first to undergo the power reduction, until the sumof the acquired available transmit powers of all the transmissionobjects in the first transmission object set is less than or equal tothe maximum transmit power, where when performing the power reductionfor the transmission objects in the first transmission object set one byone according to the priorities of the transmission objects, with atransmission object of a lowest priority being the first to undergo thepower reduction, it is satisfied that if an available transmit power fora priority of n is not 0, an available transmit power of a transmissionobject with a priority of n+1 is equal to an initial transmit power ofthe transmission object with the priority of n+1, where m is the numberof transmission objects in the first transmission object set, m≧n≧1, anda transmission object with a priority of 1 has a lowest priority.

Therefore, in the embodiments of the present invention, an initialtransmit power of each transmission object in a transmission object setis determined, where the transmission object set includes allto-be-transmitted uplink channels and/or SRSs; when a sum of initialtransmit powers of all the transmission objects in the transmissionobject set is greater than a maximum transmit power, a power reductionoperation is performed based on a priority sequence of informationcorresponding to the transmission objects, so as to acquire an availabletransmit power of each transmission object in the transmission objectset, where a sum of available transmit powers of all the transmissionobjects in the transmission object set is not greater than the maximumtransmit power; and each transmission object in the transmission objectset is sent according to the available transmit power corresponding toeach transmission object in the transmission object set, which can solvethe problem in which a sum of transmit powers of all to-be-transmittedobjects of a user equipment is greater than a maximum transmit power ofthe user equipment.

BRIEF DESCRIPTION OF DRAWINGS

To describe the technical solutions in the embodiments of the presentinvention more clearly, the following briefly introduces theaccompanying drawings required for describing the embodiments.Apparently, the accompanying drawings in the following description showmerely some embodiments of the present invention, and a person ofordinary skill in the art may still derive other drawings from theseaccompanying drawings without creative efforts.

FIG. 1 is a schematic flowchart of a power determining method accordingto an embodiment of the present invention;

FIG. 2 is a schematic flowchart of a power determining method accordingto another embodiment of the present invention;

FIG. 3 is a schematic block diagram of a user equipment according to anembodiment of the present invention;

FIG. 4 is a schematic block diagram of a user equipment according toanother embodiment of the present invention;

FIG. 5 is a schematic block diagram of a base station according to anembodiment of the present invention;

FIG. 6 is a schematic block diagram of a base station according toanother embodiment of the present invention;

FIG. 7 is a schematic block diagram of a user equipment according toanother embodiment of the present invention; and

FIG. 8 is a schematic block diagram of a base station according toanother embodiment of the present invention.

DESCRIPTION OF EMBODIMENTS

The following clearly describes the technical solutions in theembodiments of the present invention with reference to the accompanyingdrawings in the embodiments of the present invention. Apparently, thedescribed embodiments are a part rather than all of the embodiments ofthe present invention. All other embodiments obtained by a person ofordinary skill in the art based on the embodiments of the presentinvention without creative efforts shall fall within the protectionscope of the present invention.

It should be understood that, the technical solutions of the presentinvention may be applied to various communications systems, such as: aGlobal System for Mobile Communications (“GSM” for short) system, a CodeDivision Multiple Access (“CDMA” for short) system, a Wideband CodeDivision Multiple Access (“WCDMA” for short) system, a general packetradio service (“GPRS” for short), a Long Term Evolution (“LTE” forshort) system, an LTE frequency division duplex (“FDD” for short)system, an LTE time division duplex (“TDD” for short), a UniversalMobile Telecommunications System (“UMTS” for short) or the like.

In the embodiments of the present invention, a base station may be abase station (“BTS” for short) in the GSM or CDMA, may also be a basestation (NodeB, “NB” for short) in the WCDMA, and may further be anevolved NodeB (“eNB” or “e-NodeB” for short) in the LTE, which is notlimited in the present invention.

A user equipment (“UE” for short) may also be referred to as a terminaland may communicate with one or more core networks by using a radioaccess network (“RAN” for short).

In addition, the terms “system” and “network” may be usedinterchangeably in this specification. The term “and/or” in thisspecification describes only an association relationship for describingassociated objects and represents that three relationships may exist.For example, A and/or B may represent the following three cases: Only Aexists, both A and B exist, and only B exists. In addition, thecharacter “I” in this specification generally indicates an “or”relationship between the associated objects.

FIG. 1 shows a schematic flowchart of a power determining method 100.The method 100 may be performed by a user equipment. As shown in FIG. 1,the method 100 includes:

S110. Determine an initial transmit power of each transmission object ina transmission object set, where the transmission object set includesall to-be-transmitted uplink channels and/or SRSs.

S120. When a sum of initial transmit powers of all the transmissionobjects in the transmission object set is greater than a maximumtransmit power, perform a power reduction operation based on a prioritysequence of information corresponding to the transmission objects, so asto acquire an available transmit power of each transmission object inthe transmission object set, where a sum of available transmit powers ofall the transmission objects in the transmission object set is notgreater than the maximum transmit power.

S130. Send each transmission object in the transmission object setaccording to the available transmit power corresponding to eachtransmission object in the transmission object set.

Specifically, when uplink channels and/or SRSs (namely, a transmissionobject set) corresponding to multiple carriers need to be transmittedsimultaneously, a user equipment may first calculate an initial transmitpower of each transmission object in the transmission object set. Aftercalculating the initial transmit power of each transmission object, theuser equipment may compare a sum of initial transmit powers of all thetransmission objects with a maximum transmit power; when the sum of theinitial transmit powers of all the transmission objects is less than orequal to the maximum transmit power, the user equipment may directlysend each transmission object in the transmission object set, or whenthe sum of the initial transmit powers of all the transmission objectsis greater than the maximum transmit power, the user equipment needs toperform a power reduction operation. Specifically, the user equipmentmay first determine a priority of each transmission object according toa priority sequence of information corresponding to the transmissionobjects and corresponding information of each transmission object in thetransmission object set, and then may perform a power reductionoperation according to the priority of each transmission object, so asto acquire an available transmit power of each transmission object inthe transmission object set, where a sum of available transmit powers ofall the transmission objects in the transmission object set is notgreater than the maximum transmit power. After acquiring the availabletransmit power of each transmission object in the transmission objectset, the user equipment may send each transmission object in thetransmission object set according to the available transmit powercorresponding to each transmission object in the transmission objectset.

It should be noted that, in an actual implementation process, due to adevice reason or some other reasons, the sum of the available transmitpowers of all the transmission objects in the transmission object setmay exceed the maximum transmit power of the user equipment within avery short period of time; however, after the component becomes stable,the sum of the available transmit powers of all the transmission objectsin the transmission object set is not greater than the maximum transmitpower.

In this embodiment of the present invention, an initial transmit powerof a transmission object is a transmit power calculated for thetransmission object according to a related power control rule before auser equipment performs a power reduction operation. If a sum of initialtransmit powers of all transmission objects to be transmitted by theuser equipment does not exceed a maximum transmit power of the userequipment, the user equipment needs to transmit a correspondingtransmission object according to the initial transmit power. If the sumof the initial transmit powers of all the transmission objects to betransmitted by the user equipment exceeds the maximum transmit power ofthe user equipment, the user equipment needs to perform a powerreduction operation to acquire an available transmit power of eachtransmission object.

It should be understood that in this embodiment of the presentinvention, an available transmit power of a transmission object may beequal to an initial transmit power of the transmission object, or may benot equal to the initial transmit power of the transmission object. Forexample, for a transmission object with a high priority, an availabletransmit power of the transmission object may be equal to an initialtransmit power thereof; however, for a transmission object with a lowpriority, an available transmit power of the transmission object may beless than an initial transmit power thereof.

In this embodiment of the present invention, uplink channels and/or SRSsthat correspond to multiple carriers and need to be simultaneouslytransmitted may be uplink channels and/or SRSs that correspond to themultiple carriers and need to be transmitted in a same subframe.However, since subframe numbers for sending different uplink channelsand/or SRSs may not be the same, the uplink channels and/or SRSs thatcorrespond to the multiple carriers and need to be simultaneouslytransmitted may also be construed as objects that need to be transmittedat a time point or within a period of time.

In this embodiment of the present invention, the transmission object setincludes all to-be-transmitted uplink channels and/or SRSs, which meansthat: in a case in which only uplink channels need to be transmitted,the transmission object set includes all the to-be-transmitted uplinkchannels; in a case in which only SRSs need to be transmitted, thetransmission object set includes all the to-be-transmitted SRSs; and ina case in which both uplink channels and SRSs need to be transmitted,the transmission object set includes all the to-be-transmitted uplinkchannels and all the to-be-transmitted SRSs.

It should be understood that in this embodiment of the presentinvention, the priority sequence of the information corresponding to thetransmission objects may be preset, or may be dynamically set by theuser equipment according to an upper-layer configuration, or may beacquired by the user equipment by using another approach, which is notlimited by this embodiment of the present invention.

In this embodiment of the present invention, the priority sequence ofthe information corresponding to the transmission objects may include atleast one of the following:

a priority sequence of types of the transmission objects, a prioritysequence of UCI carried in the transmission objects, and a prioritysequence of carriers corresponding to the transmission objects.

In this embodiment of the present invention, the performing a powerreduction operation based on a priority sequence of informationcorresponding to the transmission objects may include:

determining a priority of each transmission object in the transmissionobject set according to the priority sequence of the informationcorresponding to the transmission objects and corresponding informationof each transmission object in the transmission object set, where

in all the embodiments of the present invention, correspondinginformation of a transmission object may indicate a type correspondingto the transmission object, for example, a corresponding type of onetransmission object may be: a PRACH channel, a PUCCH channel, a PUSCHchannel (which may be specifically a PUSCH channel carrying UCI or aPUSCH channel not carrying UCI), or an SRS channel; correspondinginformation of a transmission object may indicate information carried inthe transmission object, for example, corresponding information of onetransmission object may be uplink control information UCI, PUSCH data,or SRS; or corresponding information of a transmission object mayindicate information of a carrier corresponding to the transmissionobject; and

performing the power reduction operation according to the priority ofeach transmission object in the transmission object set.

In this embodiment of the present invention, the user equipment maydetermine the priority of each transmission object in the transmissionobject set only according to the priority sequence of the types of thetransmission objects and a type of each transmission object in thetransmission object set; may determine the priority of each transmissionobject in the transmission object set only according to the prioritysequence of the UCI carried in the transmission objects and UCI carriedin each transmission object in the transmission object set; orapparently, may also determine the priority of each transmission objectonly according to the priority sequence of the carriers corresponding tothe transmission objects and a carrier corresponding to eachtransmission object in the transmission object set.

In this embodiment of the present invention, the user equipment may alsofirst determine the priority of each transmission object according toone of the following criteria: the priority sequence of the types of thetransmission objects, the priority sequence of the UCI carried in thetransmission objects, and the priority sequence of the carrierscorresponding to the transmission objects. In the event that there aretransmission objects sharing a same priority, the user equipment thendetermines a priority of same-priority transmission objects according toone or two of the following criteria other than the selected criterion:the priority sequence of the types of the transmission objects, thepriority sequence of the UCI carried in the transmission objects, andthe priority sequence of the carriers corresponding to the transmissionobjects.

For example, a priority of each transmission object in a transmissionobject set S may be first determined according to a priority sequence oftypes of transmission objects. If it is determined, according to thepriority sequence of the types of the transmission objects, thatpriorities of multiple transmission objects are the same, and if it isassumed that the multiple same-priority transmission objects determinedaccording to the priority sequence of the types of the transmissionobjects form a transmission object set S1, a priority of eachtransmission object in the transmission object set S1 is then furtherdetermined according to a priority sequence of UCI carried in thetransmission objects. If it is determined, according to the prioritysequence of the UCI carried in the transmission objects, that prioritiesof multiple transmission objects in the transmission object set S1 arethe same, and if it is assumed that the multiple same-prioritytransmission objects in the transmission object set S1 form a set S2, apriority of each transmission object in the set S2 is then furtherdetermined according to a priority sequence of carriers corresponding tothe transmission objects. If the set S2, which is formed from themultiple same-priority transmission objects in the transmission objectset S1, includes a PUCCH1 carrying an HARQ-ACK for transmission and aPUCCH2 carrying an HARQ-ACK for transmission, prioritization may also beperformed according to the number of HARQ-ACK bits to be transmitted onthe PUCCH1 and PUCCH2, for example, a PUCCH with more HARQ-ACK bits hasa higher priority than a PUCCH with fewer HARQ-ACK bits.

For example, the user equipment may determine the priority of eachtransmission object in the transmission object set according to thepriority sequence of the types of the transmission objects and the typeof each transmission object in the transmission object set; and

when some of the transmission objects have a same priority after thepriority of the each transmission object in the transmission object setis determined according to a priority sequence of a type of atransmission object and a type of the each transmission object in thetransmission object set, determine a priority of each transmissionobject among same-priority transmission objects according to thepriority sequence of the UCI carried in the transmission objects and UCIcarried in each transmission object in the same-priority transmissionobjects, or

determine a priority of each transmission object in same-prioritytransmission objects according to the priority sequence of the carrierscorresponding to the transmission objects and a carrier corresponding toeach transmission object in the same-priority transmission objects.

In this embodiment of the present invention, the types of thetransmission objects may be classified into PRACH, PUCCH, PUSCH carryingUCI, PUSCH not carrying UCI, and SRS, where the priority sequence of thetypes of the transmission objects may include at least one of thefollowing:

when a PRACH exists, the PRACH has a highest priority;

when a PUCCH and a PUSCH coexist, a priority of the PUCCH is higher thana priority of the PUSCH, or a priority of the PUCCH is higher than apriority of a PUSCH not carrying UCI and is the same as a priority of aPUSCH carrying UCI;

when a PUSCH carrying uplink control information UCI and a PUSCH notcarrying UCI coexist, a priority of the PUSCH carrying UCI is higherthan a priority of the PUSCH not carrying UCI; and

when a PRACH, a PUCCH, a PUSCH, and an SRS coexist, the SRS has a lowestpriority.

Specifically, the priority sequence of the types of the transmissionobjects may also be that: a priority of a PRACH is higher than apriority of a PUCCH, a priority of a PUCCH is higher than a priority ofa PUSCH carrying UCI, a priority of a PUSCH carrying UCI is higher thana priority of a PUSCH not carrying UCI, and a priority of a PUSCH notcarrying UCI is higher than a priority of an SRS. Alternatively, thepriority sequence of the types of the transmission objects may also bethat: a priority of a PRACH is higher than a priority of a PUCCH, apriority of a PUCCH is equal to a priority of a PUSCH carrying UCI, apriority of a PUSCH carrying UCI is higher than a priority of a PUSCHnot carrying UCI, and a priority of a PUSCH not carrying UCI is higherthan a priority of an SRS.

In this embodiment of the present invention, if a priority of a PUCCH isthe same as a priority of a PUSCH carrying UCI, relatively important UCIinformation can be better protected in some application scenarios. Forexample, when UCI in a UCI-carrying PUSCH is an HARQ-ACK and UCI carriedin a PUCCH is channel state information, a priority of the PUCCH and apriority of the PUSCH carrying UCI are first set to be the same, andthen the PUCCH and the PUSCH carrying UCI that have a same priority arefurther prioritized according to a priority of the carried UCI, to bespecific, it can be determined that the PUSCH carrying hybrid automaticrepeat request information has a higher priority. In this way, higherprotection is provided for the hybrid automatic repeat requestinformation and transmission performance for this type of importantinformation is guaranteed. Same or similar effects can be achieved in adual connectivity scenario, or in a scenario in which UCI can besimultaneously transmitted on multiple uplink carriers, or in a scenarioin which multiple PUCCHs are allowed for simultaneous transmission onmultiple carriers.

In this embodiment of the present invention, UCI carried in atransmission object may be classified into hybrid automatic repeatrequest information, a scheduling request, and channel stateinformation, where the priority sequence of the UCI carried in thetransmission objects may include at least one of the following:

when channel state information and a scheduling request exist, apriority of the channel state information is lower than a priority ofthe scheduling request; and

when hybrid automatic repeat request information and a schedulingrequest exist, a priority of the hybrid automatic repeat requestinformation is higher than or equal to a priority of the schedulingrequest.

In this embodiment of the present invention, the priority sequence ofthe UCI carried in the transmission objects may include at least one ofthe following:

when channel state information exists and the channel state informationincludes a channel quality indicator and a precoding matrix, a priorityof the channel quality indicator is equal to a priority of the precodingmatrix; and

when channel state information exists and the channel state informationincludes a rank indicator, a channel quality indicator, and a precodingmatrix, the rank indicator has a highest priority.

It should be understood that in this embodiment of the presentinvention, the determining the priority of each transmission objectaccording to the UCI carried in the transmission objects may be:determining the priority of each transmission object according to apriority of UCI content that has a highest priority among contents of arespective UCI carried in each transmission object, for example, UCIinformation carried in a PUCCH channel 1 includes only a schedulingrequest, and UCI information carried in a PUCCH channel 2 includes onlya channel quality indicator and a precoding matrix; in this case, ifprioritization is performed according to a priority of carried contentthat has a highest priority, a priority of the PUCCH channel 1 is higherthan a priority of the PUCCH channel 2.

In this embodiment of the present invention, the priority sequence ofthe carriers corresponding to the transmission objects may include atleast one of the following:

a priority sequence determined based on index sequence numbers of thecarriers, a carrier priority sequence configured by an upper layer, apriority sequence determined based on duplex modes of the carriers, apriority sequence determined based on transmission points correspondingto the carriers, and a priority sequence determined based on an RRCconnection state of carriers.

In this embodiment of the present invention, indexes of carriers may bepreconfigured, where the preconfigured carrier indexes may be setaccording to importance of the carriers to the user equipment. Ifindexing is performed in descending order of importance, that is to say,a carrier of high importance is assigned a small index, a priority rulecorresponding to the carrier indexes is that the carrier indexes aresequenced from highest to lowest priority and a carrier with a smallcarrier index has a high priority. Apparently, indexing may also beperformed in ascending order of importance, that is to say, a carrier ofhigh importance is assigned a large index; in this case, a priority rulecorresponding to the carrier indexes is that the carrier indexes aresequenced from highest to lowest priority and a carrier with a smallcarrier index has a lower priority.

In this embodiment of the present invention, a priority sequencecorresponding to carriers, from highest to lowest priority, may beconfigured by an upper layer, specifically, the priority sequence may benotified by the upper layer by using semi-static signaling.

In this embodiment of the present invention, carriers may correspond tocorresponding transmission points, or may correspond to correspondingbase stations, for example, a carrier 1 comes from a macro base station,and a carrier 2 comes from a pico base station; in this case, prioritiesof the carriers are priorities of the transmission points or prioritiesof the base stations. In an example of aggregating two uplink carriersfor the user equipment, the priorities corresponding to the carriers maybe that: a priority of a carrier corresponding to a macro base station(Macro) is higher than a priority of a carrier corresponding to a picobase station (Pico). This case is mainly seen in a scenario in whichradio resource control (“RRC” for short) control information and/or asemi-persistent scheduling SPS service of the user equipment is to betransmitted, because better protection can be provided for RRC controlinformation and/or semi-persistent scheduling (“SPS” for short) servicedata.

In this embodiment of the present invention, the priority sequence ofthe carriers corresponding to the transmission objects may include: apriority sequence determined based on duplex modes of the carriers, forexample, a priority of a carrier whose duplex mode is frequency divisionduplex (FDD) is lower than a priority of a carrier whose duplex mode istime division duplex (TDD).

Specifically, the priority sequence based on the informationcorresponding to the transmission objects may include at least one ofthe following:

a priority of a PUCCH transmitted on a carrier whose duplex mode isfrequency division duplex is lower than a priority of a PUCCHtransmitted on a carrier whose duplex mode is TDD; in this case, thePUCCH transmitted on the FDD carrier and the PUCCH transmitted on theTDD carrier may be PUCCHs carrying hybrid automatic repeat requestinformation; and

a priority of a PUCCH transmitted on a carrier whose duplex mode is FDDis lower than a priority of a PUSCH that carries UCI and is transmittedon a carrier whose duplex mode is TDD; in this case, the UCI in theUCI-carrying PUSCH transmitted on the TDD carrier includes hybridautomatic repeat request information.

In all the embodiments of the present invention, when the prioritysequence of the carriers corresponding to the transmission objects isdetermined based on duplex modes of the carriers, it is beneficial to ascenario in which both TDD and FDD are applied. For example, in thisscenario, if a PUCCH transmitted on a carrier whose duplex mode is FDDand a PUCCH transmitted on a carrier whose duplex mode is TDD coexistand both the PUCCHs are PUCCHs carrying hybrid automatic repeat requestinformation, generally, the PUCCH transmitted on the TDD carrier carriesHARQ-ACKs of multiple downlink subframes, and the PUCCH transmitted onthe FDD carrier carries an HARQ-ACK of only one downlink subframe. Inthis case, according to the priority sequence determined based oncarrier duplex modes, a priority of the PUCCH transmitted on the TDDcarrier is higher than a priority of the PUCCH transmitted on the FDDcarrier, which in turn ensures PUCCH transmission performance on the TDDcarrier, and eliminates the need to retransmit data of the multipledownlink subframes on the TDD carrier, and ultimately improves systemperformance.

In this embodiment of the present invention, the priority sequence ofthe carriers corresponding to the transmission objects may include apriority sequence determined based on RRC connection states of carriers,for example, a priority of a carrier supporting RRC connection is higherthan a priority of a carrier not supporting RRC connection, or apriority of a carrier carrying RRC information is higher than a priorityof a carrier not carrying RRC information. In this embodiment of thepresent invention, the user equipment may first determine a priority ofa transmission object according to the priority sequence determinedbased on the RRC connection states. For example, if a carrier 1 is acarrier supporting RRC connection and a carrier 2 is a carrier notsupporting RRC connection, a priority of the carrier 1 is higher than apriority of the carrier 2, regardless of types of transmission objectscorresponding to the carrier 1 and the carrier 2, or regardless of UCIcarried in transmission objects corresponding to the carrier 1 and thecarrier 2. When there are still same-priority transmission objects afterthe priorities of the transmission objects are determined according tothe priority sequence determined based on the RRC connection states, thepriorities of the transmission objects may be further determinedaccording to priorities of corresponding types of the transmissionobjects and/or priorities of the UCI carried in the transmissionobjects.

In this embodiment of the present invention, the performing the powerreduction operation according to the priority of each transmissionobject may include:

performing the power reduction operation for the transmission objects inthe transmission object set one by one according to the priorities ofthe transmission objects, with a transmission object of a lowestpriority being the first to undergo the power reduction, until a sum ofacquired available transmit powers of all the transmission objects inthe transmission object set is less than or equal to the maximumtransmit power.

In this embodiment of the present invention, when performing the powerreduction for the transmission objects one by one according to thepriorities of the transmission objects, with a transmission object of alowest priority being the first to undergo the power reduction, it issatisfied that if an available transmit power of a transmission objectwith a priority of n is not 0, an available transmit power of atransmission object with a priority of n+1 is equal to an initialtransmit power of the transmission object with the priority of n+1,where m is the number of transmission objects in the transmission objectset, m≧n≧1, and a transmission object with a priority of 1 has a lowestpriority.

That is to say, after the priority of each transmission object isdetermined based on the priority sequence, power reduction may be firstperformed on transmit power of a transmission object with a lowestpriority. If an initial transmit power of the transmission object with alowest priority can satisfy a condition for starting power reduction,specifically, the initial transmit power of the transmission object witha lowest priority is greater than a difference between the initialtransmit power of each transmission object in the transmission objectset and the maximum transmit power of the user equipment, powerreduction is performed only on the transmission object with a lowestpriority to obtain an available transmit power of the transmissionobject with a lowest priority, and available transmit powers of othertransmission objects are equal to their initial transmit powers. If theinitial transmit power of the transmission object with a lowest prioritycannot satisfy the condition for starting power reduction, powerreduction is first performed on the transmission object with a lowestpriority to obtain its available transmit power, which is 0, and thenpower reduction is performed on a transmission object with a secondlowest priority. If an initial transmit power of the transmission objectwith the second lowest priority can satisfy a condition for startingpower reduction, specifically, a sum of the initial transmit power ofthe transmission object with a lowest priority and the initial transmitpower of the transmission object with the second lowest priority isgreater than the difference between the initial transmit power of eachtransmission object in the transmission object set and the maximumtransmit power of the user equipment, power reduction is performed onthe transmission object with the second lowest priority to obtain itsavailable transmit power, and available transmit powers of othertransmission objects (other transmission objects than the transmissionobject with the second lowest priority and the transmission object witha lowest priority, in the transmission object set) are equal to theirinitial transmit powers. If the initial transmit power of thetransmission object with the second lowest priority cannot satisfy thecondition for starting power reduction, power reduction is performed ona transmission object with the third lowest priority, and so on, untilthe sum of the available transmit powers of all the transmission objectsin the transmission object set is less than or equal to the maximumtransmit power of the user equipment.

In this embodiment of the present invention, when there are multipletransmission objects with a same priority, equal power reduction isperformed on the multiple transmission objects with the same priority.

In this embodiment of the present invention, an operation of equal powerreduction may be to perform equal power reduction on objects requiringpower reduction according to a ratio of initial transmit power toavailable transmit power, where the ratio is the same for eachtransmission object undergoing power reduction; or may be to subtract asame amount of power from initial transmit power of an object requiringpower reduction.

It is assumed that same-priority transmission objects requiring powerreduction include transmission objects A, B, and C, where an initialtransmit power corresponding to the transmission object A is a, aninitial transmit power corresponding to the transmission object B is b,a transmit power of the transmission object C is c, and an amount ofpower that needs to be reduced is d. An equal power reduction operationmay be directly performed on all the transmission objects according to aratio, specifically, a coefficient w may be obtained according to aformula w (a+b+c)=d, so as to obtain power that needs to be reduced forthe transmission objects A, B, and C, which is wa, wb, and wc,respectively, that is, available transmit power is a−wa, b−wb, and c−wc,respectively. Alternatively, a same amount of power may also besubtracted from the initial transmit powers of the transmission objectsrequiring power reduction, specifically, e may be obtained according toa formula 3e=d; the amount of power that needs to be reduced for thetransmission objects A, B, and C is d/3, that is to say, availabletransmit powers are a−d/3, b−d/3, and c−d/3, respectively.

It should be understood that power reduction may also be performed ontransmission objects in other manners in this embodiment of the presentinvention. For example, power reduction may be performed on all thetransmission objects, for example, according to a formula ma+nb+pc=D,where a numerical value relationship between m, n, and p may bedetermined according to priorities of corresponding transmissionobjects, so as to obtain transmit powers of the transmission objects A,B and C, which are ma, nb, and pc, respectively.

Apparently, in this embodiment of the present invention, power reductionmay also be performed in other manners, which is not limited by thisembodiment of the present invention.

To understand the present invention more comprehensively, the followingdescribes the power determining method of the present invention withreference to several examples. In the following examples, it is assumedthat two uplink carriers, namely, a carrier 1 and a carrier 2, areaggregated for the user equipment, multiple to-be-transmittedtransmission objects need to be sent in a same subframe, and a sum oftransmit powers of the transmission objects is greater than the maximumtransmit power of the user equipment. For ease of description, atransmit power in the following examples is represented by a linearvalue of transmit power, or apparently, may be represented by anothervalue, for example, an absolute value of transmit power or a relativevalue of transmit power.

EXAMPLE 1

To-be-transmitted objects are a PUCCH channel 1 that needs to betransmitted on the carrier 1 and a PUCCH channel 2 that needs to betransmitted on the carrier 2. In this example, only priorities of thechannels are compared. The priorities of the two channels are the same,and therefore equal power reduction may be performed on transmit powersof the two PUCCH channels A reduction coefficient may be obtainedaccording to the following formula: w·{circumflex over(P)}_(PUCCH,1)(i)+w·{circumflex over (P)}_(PUCCH,2)(i)={circumflex over(P)}_(CMAX)(i), where {circumflex over (P)}_(CMAX)(i) is a linear valueof maximum transmit power, {circumflex over (P)}_(PUCCH,1)(i) is alinear value of initial transmit power of the PUCCH channel 1, and{circumflex over (P)}_(PUCCH,2)(i) is a linear value of initial transmitpower of the PUCCH channel 2. Therefore, after the power reduction,linear values of transmit powers of the PUCCHs on the carrier 1 andcarrier 2 are w·{circumflex over (P)}_(PUCCH,1)(i) and w·{circumflexover (P)}_(PUCCH,2)(i) respectively.

EXAMPLE 2

To-be-transmitted objects are a PUCCH channel 1 that needs to betransmitted on the carrier 1 and a PUCCH channel 2 that needs to betransmitted on the carrier 2, where UCI transmitted on the PUCCH channel1 is hybrid automatic repeat request information and UCI transmitted onthe PUCCH channel 2 is a CQI/PMI. Since the two channels are both PUCCHchannels, prioritization may be performed according to the UCIseparately carried in the two channels A priority of hybrid automaticrepeat request information is higher than a priority of a CQI/PMI, andtherefore a priority of the PUCCH channel 1 is higher than a priority ofthe PUCCH channel 2, which means that a transmit power of the PUCCH onthe carrier 2 may be reduced to obtain an available transmit power. Inwhich case, a linear value of the available transmit power of the PUCCHchannel 2 on the carrier 2 is {circumflex over(P)}_(PUCCH,2)(i)={circumflex over (P)}_(CMAX)(i)−{circumflex over(P)}_(PUCCH,1)(i), where {circumflex over (P)}_(CMAX)(i) is a linearvalue of maximum transmit power and {circumflex over (P)}_(PUCCH,1)(i)is a linear value (which is equal to a linear value of initial transmitpower) of available transmit power of the PUCCH channel 1.

EXAMPLE 3

To-be-transmitted objects are a PUSCH channel 1 that carries UCI andneeds to be transmitted on the carrier 1 and a PUSCH channel 2 thatcarries UCI and needs to be transmitted on the carrier 2, where the UCIcarried in the PUSCH channel 1 is hybrid automatic repeat requestinformation and a CQI/PMI, while the uplink control information carriedin the PUSCH channel 2 is a CQI/PMI. Since the two channels are bothPUSCHs, prioritization may be performed according to the UCI separatelycarried in the two channels A priority of hybrid automatic repeatrequest information is higher than a priority of a CQI/PMI, andtherefore a priority of the PUSCH channel 1 is higher than a priority ofthe PUSCH channel 2, which means that a transmit power of the PUSCH onthe carrier 2 may be reduced to obtain an available transmit power. Inwhich case, a linear value of the available transmit power of the PUSCHchannel 2 on the carrier 2 is {circumflex over (P)}_(PUSCH) _(_)_(UCI,2)(i)={circumflex over (P)}_(CMAX)(i)−{circumflex over(P)}_(PUSCH) _(_) _(UCI,1)(i) where {circumflex over (P)}_(CMAX)(i) is alinear value of maximum transmit power and {circumflex over (P)}_(PUSCH)_(_) _(UCI,1)(i) is a linear value of available transmit power (which isequal to a linear value of initial transmit power) of the PUSCH channel1.

EXAMPLE 4

In the two uplink carriers aggregated for the user equipment, thecarrier 1 comes from a macro base station, and the carrier 2 comes froma pico base station. If channels to be transmitted by the user equipmentin the subframe are two PUSCH channels, to-be-transmitted objects are aPUSCH channel 1 that does not carry UCI and needs to be transmitted onthe carrier 1, and a PUSCH channel 2 that does not carry UCI and needsto be transmitted on the carrier 2. Since the carrier 1 comes from amacro base station and the carrier 2 comes from a pico base station, apriority of the PUSCH channel 1 is higher than a priority of the PUSCHchannel 2, which means that a transmit power of the PUSCH channel 2 maybe reduced to obtain an available transmit power. In which case, alinear value of the available transmit power of the PUSCH channel 2corresponding to the pico base station is {circumflex over(P)}_(PUSCH,pico)(i)={circumflex over (P)}_(CMAX)(i)−{circumflex over(P)}_(PUSCH,Macro)(i), where {circumflex over (P)}_(CMAX)(i) is a linearvalue of maximum transmit power, and {circumflex over(P)}_(PUSCH,Macro)(i) is a linear value of available transmit power(which is equal to a linear value of initial transmit power) of thePUSCH channel 1.

EXAMPLE 5

To-be-transmitted objects are a PUCCH channel 1 that needs to betransmitted on the carrier 1, and a PUSCH channel 1 that carries UCI andneeds to be transmitted on the carrier 2. The channels may be compared.Since a priority of a PUCCH channel is higher than a priority of a PUSCHchannel, a priority of the PUCCH channel 1 is higher than a priority ofthe PUSCH channel 1, which means that a transmit power of the PUSCHchannel 1 may be reduced to obtain an available transmit power. In whichcase, a linear value of the available transmit power of the PUSCHchannel 1 is {circumflex over (P)}_(PUSCH,1)(i)={circumflex over(P)}_(CMAX)(i)−{circumflex over (P)}_(PUCCH,1)(i), where {circumflexover (P)}_(CMAX)(i) is a linear value of maximum transmit power and{circumflex over (P)}_(PUCCH,1)(i) is a linear value of availabletransmit power (which is equal to a linear value of initial transmitpower) of the PUCCH channel 1.

EXAMPLE 6

To-be-transmitted objects are a PUCCH channel 1 that needs to betransmitted on the carrier 1, a PUSCH channel 1 that does not carry UCIand need to be transmitted on the carrier 1, and a PUSCH channel 2 thatdoes not carry UCI and needs to be transmitted on the carrier 2. Since apriority of a PUCCH channel is higher than a priority of a PUSCHchannel, power reduction may be performed on the PUSCH channels Thereexist two PUSCH channels, and equal power reduction may be performed onthe two PUSCH channels. In which case, available transmit powers of thePUSCH channel 1 and the PUSCH channel 2 may be obtained: {circumflexover (P)}_(PUSCH,1)(i)={circumflex over (P)}_(PUSCH,2)(i)=({circumflexover (P)}_(CMAX)(i)−{circumflex over (P)}_(PUCCH,1)(i))/2, where{circumflex over (P)}_(CMAX)(i) is a linear value of maximum transmitpower and {circumflex over (P)}_(PUCCH,1)(i) is a linear value ofavailable transmit power (which is equal to a linear value of initialtransmit power) of the PUCCH channel 1.

EXAMPLE 7

To-be-transmitted objects are a PUCCH channel 1 that needs to betransmitted on the carrier 1, and a PUSCH channel 1 that carries UCI andneeds to be transmitted on the carrier 2, where UCI carried in the PUCCHchannel 1 is a CQI/PMI, and the UCI carried in the PUSCH channel 1 ishybrid automatic repeat request information. First, channelscorresponding to transmission objects may be compared according to apriority sequence of types of the transmission objects. Since a priorityof a PUCCH channel is equal to a priority of a PUSCH channel carryingUCI, prioritization needs to be further performed on the UCI carried inthe PUCCH channel 1 and the UCI carried in the PUSCH channel 1 accordingto a priority sequence of UCI carried in the transmission objects. Sincea priority of the hybrid automatic repeat request information is higherthan a priority of a CQI/PMI, a priority of the PUCCH channel 1 is lowerthan a priority of the PUSCH channel 1, which means that a transmitpower of the PUCCH on the carrier 1 may be reduced to obtain anavailable transmit power. In which case, a linear value of the availabletransmit power of the PUCCH channel 1 on the carrier 1 is {circumflexover (P)}_(PUCCH,1)(i)={circumflex over (P)}_(CMAX)(i)−{circumflex over(P)}_(PUSCH,1)(i), where {circumflex over (P)}_(CMAX)(i) is a linearvalue of maximum transmit power and {circumflex over (P)}_(PUSCH,1)(i)is a linear value of available transmit power (which is equal to alinear value of initial transmit power) of the PUSCH channel 1.

EXAMPLE 8

To-be-transmitted objects are a PUCCH channel 1 that needs to betransmitted on the carrier 1, and a PUCCH channel 2 that needs to betransmitted on the carrier 2, where UCI transmitted on the PUCCH channel1 is hybrid automatic repeat request information, and UCI transmitted onthe PUCCH channel 2 is also hybrid automatic repeat request information;and the carrier 1 is a carrier whose duplex mode is FDD, and the carrier2 is a carrier whose duplex mode is TDD. First, channels correspondingto transmission objects may be compared according to a priority sequenceof types of the transmission objects. Since the two channels are bothPUCCH channels, prioritization needs to be further performed on UCIcarried in the PUCCH channel 1 and UCI carried in the PUCCH channel 2according to a priority sequence of UCI carried in the transmissionobjects. Since hybrid automatic repeat request information is carried inboth channels, prioritization still needs to be further performed on thecarrier 1 corresponding to the PUCCH channel 1 and the carrier 2corresponding to the PUCCH channel 2 according to a priority sequence ofcarriers corresponding to the transmission objects. The duplex mode ofthe carrier 1 corresponding to the PUCCH channel 1 is FDD and the duplexmode of the carrier 2 corresponding to the PUCCH channel 2 is TDD, andconsequently a priority of the carrier 2 corresponding to the PUCCHchannel 2 is higher than a priority of the carrier 1 corresponding tothe PUCCH channel 1, which means that a priority of the PUCCH channel 2is higher than a priority of the PUCCH channel 1, specifically, atransmit power of the PUCCH on the carrier 1 may be reduced to obtain anavailable transmit power. In which case, a linear value of the availabletransmit power of the PUCCH channel 1 on the carrier 1 is {circumflexover (P)}_(PUCCH,1)(i)={circumflex over (P)}_(CMAX)(i)−{circumflex over(P)}_(PUCCH,2)(i), where {circumflex over (P)}_(CMAX)(i) is a linearvalue of maximum transmit power and {circumflex over (P)}_(PUCCH,2)(i)is a linear value of available transmit power (which is equal to alinear value of initial transmit power) of the PUCCH channel 2.

It should be understood that the foregoing examples are merely specificimplementations of this embodiment of the present invention, and thisembodiment of the present invention may also be practiced in othermanners. For example, in Example 5, comparison may be not performedaccording to a channel type; instead, carried UCI may be directlycompared. Referring again to Example 5, if UCI carried in the PUCCHchannel 1 is a channel quality indicator/precoding matrix indicator andUCI carried in a PUSCH channel 1 is a scheduling request, the priorityof the PUCCH channel 1 is lower than the priority of the PUSCH channel1. In which case, power reduction needs to be performed on the transmitpower of the PUCCH.

Therefore, according to the power determining method in this embodimentof the present invention, an initial transmit power of each transmissionobject in a transmission object set is determined, where thetransmission object set includes all to-be-transmitted uplink channelsand/or SRSs; when a sum of initial transmit powers of all thetransmission objects in the transmission object set is greater than amaximum transmit power, a power reduction operation is performed basedon a priority sequence of information corresponding to the transmissionobjects, so as to acquire an available transmit power of eachtransmission object in the transmission object set, where a sum ofavailable transmit powers of all the transmission objects in thetransmission object set is not greater than the maximum transmit power;and each transmission object in the transmission object set is sentaccording to the respective available transmit power corresponding toeach transmission object in the transmission object set, which can solvethe problem in which a sum of transmit powers of all to-be-transmittedobjects of a user equipment is greater than a maximum transmit power ofthe user equipment.

The foregoing has described the power determining method from a userequipment side with reference to FIG. 1. The following describes thepower determining method from a base station side with reference to FIG.2.

FIG. 2 is a schematic flowchart of a power determining method 200according to an embodiment of the present invention. As shown in FIG. 2,the method 200 includes:

S210. Determine a first transmission object set, where the firsttransmission object set includes all to-be-transmitted uplink channelsand/or SRSs of a user equipment.

S220. When it is determined that a sum of transmit powers of alltransmission objects in the first transmission object set is greaterthan a maximum transmit power of the user equipment, perform a powerreduction operation based on a priority sequence of informationcorresponding to the transmission objects, so as to acquire an availabletransmit power of each transmission object in the first transmissionobject set, where a sum of available transmit powers of all thetransmission objects in the first transmission object set is less thanor equal to the maximum transmit power of the user equipment.

S230. Determine, from the first transmission object set and according tothe available transmit power of each transmission object in the firsttransmission object set, a second transmission object set that needs tobe scheduled, where an available transmit power of each transmissionobject in the second transmission object set is not 0.

S240. Perform scheduling for the user equipment according to the secondtransmission object set.

Specifically, when a base station needs to perform uplink datascheduling for a user equipment, the base station may determine a firsttransmission object set for the user equipment, where the firsttransmission object set includes all uplink channels and/or SRSs to betransmitted by the user equipment, specifically, the first transmissionobject set not only includes all uplink channels and/or SRSs that needto be fed back to the base station by the user equipment, but alsoincludes all uplink channels and/or SRSs that need to be fed back toanother base station by the user equipment. After determining the firsttransmission object set for the user equipment, the base station maydetermine an initial transmit power of each transmission object in thefirst transmission object set. When a sum of initial transmit powers ofall the transmission objects in the first transmission object set isgreater than a maximum transmit power of the user equipment, the basestation may determine a priority of each transmission object in thefirst transmission object set based on a priority sequence ofinformation corresponding to the transmission objects, and then, mayperform a power reduction operation according to the priority of eachtransmission object, so as to acquire an available transmit power ofeach transmission object in the first transmission object set, where asum of available transmit powers of all the transmission objects in thefirst transmission object set is less than or equal to the maximumtransmit power of the user equipment. Then, the base station maydetermine, according to the available transmit power of eachtransmission object in the first transmission object set andtransmission objects that need to be fed back to the base station, asecond transmission object set that needs to be scheduled by the basestation, where an available transmit power of a transmission object inthe second transmission object set is not 0, and transmission objects inthe second transmission object set are transmission objects that need tobe scheduled by the base station. The base station may performscheduling for the user equipment after determining the secondtransmission object set that needs to be scheduled by the base station.

In this embodiment of the present invention, the base station maydetermine, according to an actual situation, uplink channels and/or SRSsthat need to be transmitted to another base station by the userequipment, for example, determine, according to an upper-layer parameterconfiguration of the user equipment, time of feeding back periodicchannel state information or SRSs to another base station by the userequipment; or the base station may determine, according to a currentservice condition of the user equipment, scheduling that may beperformed by another base station for the user equipment, so as toobtain the first transmission object set for the user equipment, whichmeans that, not only all uplink channels and/or SRSs that need to be fedback to the base station by the user equipment are included, but alsoall uplink channels and/or SRSs that need to be fed back to another basestation by the user equipment are included.

In this embodiment of the present invention, the second transmissionobject set may be formed from all transmission objects that need to bescheduled by the base station and whose available transmit power is not0, or may be formed from a part of transmission objects that need to bescheduled by the base station and whose available transmit power is not0, for example, the second transmission object set may be formed fromtransmission objects that need to be scheduled by the base station andwhose available transmit power is not 0 and whose priority is greaterthan a predetermined threshold, or formed by transmission objects thatneed to be scheduled by the base station and whose available transmitpower is not 0 and meets the requirement that a ratio of availabletransmit power to initial transmit power is greater than a predeterminedthreshold.

It should be understood that in this embodiment of the presentinvention, the priority sequence of the information corresponding to thetransmission objects may be preset, or may be dynamically set by theuser equipment according to an upper-layer configuration, or may beacquired by the user equipment by using another approach, which is notlimited by this embodiment of the present invention.

In this embodiment of the present invention, the priority sequence ofthe information corresponding to the transmission objects may include atleast one of the following:

a priority sequence of types of the transmission objects, a prioritysequence of UCI carried in the transmission objects, and a prioritysequence of carriers corresponding to the transmission objects.

In this embodiment of the present invention, the priority sequence ofthe types of the transmission objects may include at least one of thefollowing:

when a physical random access channel PRACH exists, the PRACH has ahighest priority;

when a physical uplink control channel PUCCH and a physical uplinkshared channel PUSCH coexist, a priority of the PUCCH is higher than apriority of the PUSCH, or a priority of the PUCCH is higher than apriority of a PUSCH not carrying UCI and is the same as a priority of aPUSCH carrying UCI;

when a PUSCH carrying uplink control information UCI and a PUSCH notcarrying UCI coexist, a priority of the PUSCH carrying UCI is higherthan a priority of the PUSCH not carrying UCI; and

when a PRACH, a PUCCH, a PUSCH, and an SRS coexist, the SRS has a lowestpriority.

In this embodiment of the present invention, the priority sequence ofthe UCI carried in the transmission objects may include at least one ofthe following:

when channel state information and a scheduling request exist, apriority of the channel state information is lower than a priority ofthe scheduling request; and

when hybrid automatic repeat request information and a schedulingrequest exist, a priority of the hybrid automatic repeat requestinformation is higher than or equal to a priority of the schedulingrequest.

The priority sequence of the UCI of the transmission objects may includeat least one of the following:

when channel state information exists and the channel state informationincludes a channel quality indicator and a precoding matrix, a priorityof the channel quality indicator is equal to a priority of the precodingmatrix; and

when channel state information exists and the channel state informationincludes a rank indicator, a channel quality indicator, and a precodingmatrix, the rank indicator has a highest priority.

In this embodiment of the present invention, the priority sequence ofthe carriers corresponding to the transmission objects may include atleast one of the following:

a priority sequence determined based on index sequence numbers of thecarriers, a carrier priority sequence configured by an upper layer, apriority sequence determined based on duplex modes of the carriers, apriority sequence determined based on RRC connection states of thecarriers, and a priority sequence determined based on transmissionpoints corresponding to the carriers.

In this embodiment of the present invention, the priority sequence ofthe carriers corresponding to the transmission objects may include apriority sequence determined based on duplex modes of the carriers, forexample, a priority of a carrier whose duplex mode is FDD is lower thana priority of a carrier whose duplex mode is TDD.

Specifically, the priority sequence based on the informationcorresponding to the transmission objects may include at least one ofthe following:

a priority of a PUCCH transmitted on a carrier whose duplex mode is FDDis lower than a priority of a PUCCH transmitted on a carrier whoseduplex mode is time division duplex TDD; in this case, the PUCCHtransmitted on the FDD carrier and the PUCCH transmitted on the TDDcarrier may be PUCCHs carrying hybrid automatic repeat requestinformation; and

a priority of a PUCCH transmitted on a carrier whose duplex mode is FDDis lower than a priority of a PUSCH that carries UCI and is transmittedon a carrier whose duplex mode is TDD; in this case, the UCI in theUCI-carrying PUSCH transmitted on the TDD carrier includes hybridautomatic repeat request information.

In this embodiment of the present invention, the priority sequence ofthe carriers corresponding to the transmission objects may include: apriority sequence determined based on RRC connection states of carriers,for example, a priority of a carrier supporting RRC connection is higherthan a priority of a carrier not supporting RRC connection, or apriority of a carrier carrying RRC information is higher than a priorityof a carrier not carrying RRC information. In this embodiment of thepresent invention, the user equipment may first determine a priority ofa transmission object according to the priority sequence determinedbased on the RRC connection states. For example, if a carrier 1 is acarrier supporting RRC connection and a carrier 2 is a carrier notsupporting RRC connection, a priority of the carrier 1 is higher than apriority of the carrier 2, regardless of types of transmission objectscorresponding to the carrier 1 and the carrier 2, or regardless of UCIcarried in transmission objects corresponding to the carrier 1 and thecarrier 2. When there are still same-priority transmission objects afterthe priorities of the transmission objects are determined according tothe priority sequence determined based on the RRC connection states, thepriorities of the transmission objects may be further determinedaccording to priorities of corresponding types of the transmissionobjects and/or priorities of the UCI carried in the transmissionobjects.

In this embodiment of the present invention, the performing a powerreduction operation based on a priority sequence of informationcorresponding to the transmission objects in S220 includes:

determining a priority of each transmission object in the firsttransmission object set according to the priority sequence of theinformation corresponding to the transmission objects and correspondinginformation of each transmission object in the first transmission objectset; and

performing the power reduction operation according to the priority ofeach transmission object in the first transmission object set.

In this embodiment of the present invention, the determining a priorityof each transmission object in the first transmission object setaccording to the priority sequence of the information corresponding tothe transmission objects and corresponding information of eachtransmission object in the first transmission object set includes:

determining the priority of each transmission object in the firsttransmission object set according to the priority sequence of the typesof the transmission objects and a type of each transmission object inthe first transmission object set, where the priority sequence of thetypes of the transmission objects is included in the priority sequenceof the information corresponding to the transmission objects; and

when some of the transmission objects have a same priority after thepriority of the each transmission object in the transmission object setis determined according to a priority sequence of a type of atransmission object and a type of the each transmission object in thetransmission object set, determining a priority of each transmissionobject in same-priority transmission objects according to the prioritysequence of the UCI carried in the transmission objects and UCI of eachtransmission object in the same-priority transmission objects, where thepriority sequence of the UCI carried in the transmission objects isincluded in the priority sequence of the information corresponding tothe transmission objects, or

determining a priority of each transmission object in same-prioritytransmission objects according to the priority sequence of the carrierscorresponding to the transmission objects and a carrier corresponding toeach transmission object in the same-priority transmission objects,where the priority sequence of the carriers corresponding to thetransmission objects is included in the priority sequence of theinformation corresponding to the transmission objects.

In this embodiment of the present invention, the performing the powerreduction operation according to the priority of each transmissionobject in the first transmission object set includes:

performing the power reduction operation for the transmission objects inthe first transmission object set one by one according to the prioritiesof the transmission objects, with a transmission object of a lowestpriority being the first to undergo the power reduction, until a sum ofacquired available transmit powers of all the transmission objects inthe first transmission object set is less than or equal to the maximumtransmit power.

In this embodiment of the present invention, when performing the powerreduction for the transmission objects in the first transmission objectset one by one according to the priorities of the transmission objects,with a transmission object of a lowest priority being the first toundergo the power reduction, it is satisfied that if an availabletransmit power of a transmission object with a priority of n is not 0,an available transmit power of a transmission object with a priority ofn+1 is equal to an initial transmit power of the transmission objectwith the priority of n+1i, where m is the number of transmission objectsin the first transmission object set, m≧n≧1, and a transmission objectwith a priority of 1 has a lowest priority.

In this embodiment of the present invention, the performing the powerreduction operation for the transmission objects in the firsttransmission object set one by one according to the priorities of thetransmission objects, with a transmission object of a lowest prioritybeing the first to undergo the power reduction, includes:

when multiple transmission objects have a same priority, performingequal power reduction for the multiple transmission objects that havethe same priority.

It should be understood that, for details about how the base stationdetermines the priority of the first transmission object set of the userequipment based on the priority sequence of the informationcorresponding to the transmission objects and performs a power reductionoperation, refer to the power determining method 100, and for brevity,details are not repeatedly described herein.

In this embodiment of the present invention, after determining thesecond transmission object set that needs to be scheduled, the basestation may determine, according to the priority of each transmissionobject in the second transmission object set, a resource and amodulation and coding scheme for scheduling each transmission object inthe second transmission object set. For example, a transmission objectwith a higher priority uses more resources and a higher modulation andcoding scheme. Apparently, the resource and the modulation and codingscheme for scheduling each transmission object in the secondtransmission object set may also be determined in another manner. Forexample, an available transmit power of each transmission object in thesecond transmission object set may be determined, and then the resourceand the modulation and coding scheme for scheduling each transmissionobject may be determined according to the available transmit power ofeach transmission object.

Therefore, according to the power determining method in this embodimentof the present invention, a first transmission object set is determined,where the first transmission object set includes all to-be-transmitteduplink channels and/or SRSs of a user equipment; when it is determinedthat a sum of transmit powers of all transmission objects in the firsttransmission object set is greater than a maximum transmit power of theuser equipment, a power reduction operation is performed based on apriority sequence of information corresponding to the transmissionobjects, so as to acquire an available transmit power of eachtransmission object in the first transmission object set, where a sum ofavailable transmit powers of all the transmission objects in the firsttransmission object set is less than or equal to the maximum transmitpower of the user equipment; a second transmission object set that needsto be scheduled is determined according to the available transmit powerof each transmission object in the first transmission object set, wherethe available transmit power of each transmission object in the secondtransmission object set is not 0; and then scheduling is performed forthe user equipment according to the second transmission object set,which can solve the problem in which a sum of transmit powers ofto-be-transmitted objects of the user equipment is greater than amaximum transmit power of the user equipment.

FIG. 3 is a schematic block diagram of a user equipment 300 according toan embodiment of the present invention. As shown in FIG. 3, the userequipment 300 includes:

an acquiring unit 310, configured to acquire an initial transmit powerof each transmission object in a transmission object set, where thetransmission object set includes all to-be-transmitted uplink channelsand/or sounding reference signals SRSs, and configured to acquire amaximum transmit power and acquire a priority sequence of informationcorresponding to the transmission objects;

a power reducing unit 320, configured to: when a sum of initial transmitpowers acquired by the acquiring unit 310 for all the transmissionobjects in the transmission object set is greater than the maximumtransmit power, perform a power reduction operation based on thepriority sequence of the information corresponding to the transmissionobjects, so as to acquire an available transmit power of eachtransmission object in the transmission object set, where a sum ofavailable transmit powers of all the transmission objects in thetransmission object set is not greater than the maximum transmit power;and

a sending unit 330, configured to send each transmission object in thetransmission object set according to the available transmit power thatis acquired by the power reducing unit 320 and is corresponding to eachtransmission object in the transmission object set.

Optionally, the acquiring unit 310 is specifically configured to:

acquire the priority sequence of the information corresponding to thetransmission objects, where the priority sequence of the informationcorresponding to the transmission objects includes at least one of thefollowing: a priority sequence of types of the transmission objects, apriority sequence of UCI carried in the transmission objects, and apriority sequence of carriers corresponding to the transmission objects.

Optionally, the acquiring unit 310 is specifically configured to acquirethe priority sequence of the types of the transmission objects, wherethe priority sequence of the types of the transmission objects includesat least one of the following:

when a physical random access channel PRACH exists, the PRACH has ahighest priority;

when a physical uplink control channel PUCCH and a physical uplinkshared channel PUSCH coexist, a priority of the PUCCH is higher than apriority of the PUSCH, or when a PUCCH and a PUSCH coexist, a priorityof the PUCCH is higher than a priority of a PUSCH not carrying UCI butthe priority of the PUCCH is the same as a priority of a PUSCH carryingUCI;

when a PUSCH carrying uplink control information UCI and a PUSCH notcarrying UCI coexist, a priority of the PUSCH carrying UCI is higherthan a priority of the PUSCH not carrying UCI; and

when a PRACH, a PUCCH, a PUSCH, and an SRS coexist, the SRS has a lowestpriority.

Optionally, the acquiring unit 310 is specifically configured to acquirethe priority sequence of the UCI carried in the transmission objects,where the priority sequence of the UCI carried in the transmissionobjects includes at least one of the following:

when channel state information and a scheduling request exist, apriority of the channel state information is lower than a priority ofthe scheduling request; and

when hybrid automatic repeat request information and a schedulingrequest exist, a priority of the hybrid automatic repeat requestinformation is higher than or equal to a priority of the schedulingrequest.

Optionally, the acquiring unit 310 is specifically configured to acquirethe priority sequence of the UCI carried in the transmission objects,where the priority sequence of the UCI carried in the transmissionobjects includes at least one of the following:

when channel state information exists and the channel state informationincludes a channel quality indicator and a precoding matrix, a priorityof the channel quality indicator is equal to a priority of the precodingmatrix; and

when channel state information exists and the channel state informationincludes a rank indicator, a channel quality indicator, and a precodingmatrix, the rank indicator has a highest priority.

Optionally, the acquiring unit 310 is specifically configured to acquirethe priority sequence of the carriers corresponding to the transmissionobjects, where the priority sequence of the carriers corresponding tothe transmission objects includes at least one of the following:

a priority sequence determined based on index sequence numbers of thecarriers, a carrier priority sequence configured by an upper layer, apriority sequence determined based on duplex modes of the carriers, apriority sequence determined based on RRC connection states of thecarriers, and a priority sequence determined based on transmissionpoints corresponding to the carriers.

Optionally, the acquiring unit 310 is specifically configured to acquirethe priority sequence determined based on the RRC connection states ofthe carriers, where the priority sequence determined based on the RRCconnection states of the carriers includes at least one of thefollowing:

a priority of a carrier supporting RRC connection is higher than apriority of a carrier not supporting RRC connection; and a priority of acarrier carrying RRC information is higher than a priority of a carriernot carrying RRC information.

Optionally, the acquiring unit 310 is specifically configured to acquirethe priority sequence determined based on the duplex modes of thecarriers, where the priority sequence determined based on the duplexmodes of the carriers includes that: a priority of a carrier whoseduplex mode is frequency division duplex FDD is less than a priority ofa carrier whose duplex mode is time division TDD.

Optionally, the acquiring unit 310 is specifically configured to acquirethe priority sequence of the information corresponding to thetransmission objects, where the priority sequence of the informationcorresponding to the transmission objects includes at least one of thefollowing:

a priority of a PUCCH transmitted on a carrier whose duplex mode is FDDis lower than a priority of a PUCCH transmitted on a carrier whoseduplex mode is TDD, and both the PUCCH transmitted on the FDD carrierand the PUCCH transmitted on the TDD carrier carry hybrid automaticrepeat request information; and

a priority of a PUCCH transmitted on a carrier whose duplex mode is FDDis lower than a priority of a PUSCH that carries UCI and is transmittedon a carrier whose duplex mode is TDD, where the UCI in the UCI-carryingPUSCH transmitted on the TDD carrier includes hybrid automatic repeatrequest information.

Optionally, as shown in FIG. 4, the power reducing unit 320 includes:

a determining subunit 322, configured to determine a priority of eachtransmission object in the transmission object set according to thepriority sequence of the information corresponding to the transmissionobjects and corresponding information of each transmission object in thetransmission object set; and

a power reducing subunit 326, configured to perform the power reductionoperation according to the priority determined by the determiningsubunit 322 for each transmission object in the transmission object set.

Optionally, the determining subunit 322 is specifically configured to:

determine the priority of each transmission object in the transmissionobject set according to the priority sequence of the types of thetransmission objects and a type of each transmission object in thetransmission object set, where the priority sequence of the types of thetransmission objects is included in the priority sequence of theinformation corresponding to the transmission objects; and

when some of the transmission objects have a same priority after thepriority of the each transmission object in the transmission object setis determined according to a priority sequence of a type of atransmission object and a type of the each transmission object in thetransmission object set, determine a priority of each transmissionobject in same-priority transmission objects according to the prioritysequence of the UCI carried in the transmission objects and UCI of eachtransmission object in the same-priority transmission objects, where thepriority sequence of the UCI carried in the transmission objects isincluded in the priority sequence of the information corresponding tothe transmission objects, or

determine a priority of each transmission object in same-prioritytransmission objects according to the priority sequence of the carrierscorresponding to the transmission objects and a carrier corresponding toeach transmission object in the same-priority transmission objects,where the priority sequence of the carriers corresponding to thetransmission objects is included in the priority sequence of theinformation corresponding to the transmission objects.

Optionally, the power reducing subunit 326 is specifically configuredto:

perform the power reduction operation for the transmission objects inthe transmission object set one by one according to the priorities ofthe transmission objects, with a transmission object of a lowestpriority being the first to undergo the power reduction, until a sum ofacquired available transmit powers of all the transmission objects inthe transmission object set is less than or equal to the maximumtransmit power.

Optionally, the power reducing subunit 326 is specifically configuredto:

perform the power reduction operation for the transmission objects inthe transmission object set one by one according to the priorities ofthe transmission objects, with a transmission object of a lowestpriority being the first to undergo the power reduction, until a sum ofacquired available transmit powers of all the transmission objects inthe transmission object set is less than or equal to the maximumtransmit power, where when performing the power reduction for thetransmission objects in the transmission object set one by one accordingto the priorities of the transmission objects, with a transmissionobject of a lowest priority being the first to undergo the powerreduction, it is satisfied that if an available transmit power of atransmission object with a priority of n is not 0, an available transmitpower of a transmission object with a priority of n+1 is equal to aninitial transmit power of the transmission object with the priority ofn+1, where m is the number of transmission objects in the transmissionobject set, m≧n≧1, and a transmission object with a priority of 1 has alowest priority.

Optionally, the power reducing subunit 326 is specifically configuredto:

when multiple transmission objects have a same priority, perform equalpower reduction for the multiple transmission objects that have the samepriority.

Therefore, the user equipment in this embodiment of the presentinvention determines an initial transmit power of each transmissionobject in a transmission object set, where the transmission object setincludes all to-be-transmitted uplink channels and/or SRSs; when a sumof initial transmit powers of all the transmission objects in thetransmission object set is greater than a maximum transmit power,performs a power reduction operation based on a priority sequence ofinformation corresponding to the transmission objects, so as to acquirean available transmit power of each transmission object in thetransmission object set, where a sum of available transmit powers of allthe transmission objects in the transmission object set is not greaterthan the maximum transmit power; and sends each transmission object inthe transmission object set according to the available transmit powercorresponding to each transmission object in the transmission objectset, which can solve the problem in which a sum of transmit powers ofto-be-transmitted objects of a user equipment is greater than a maximumtransmit power of the user equipment.

FIG. 5 is a schematic block diagram of a base station 400 according toan embodiment of the present invention. As shown in FIG. 5, the basestation 400 includes:

an acquiring unit 410, configured to acquire a first transmission objectset, where the first transmission object set includes allto-be-transmitted uplink channels and/or sounding reference signals SRSsof a user equipment, and configured to acquire a maximum transmit powerof the user equipment and acquire a priority sequence of informationcorresponding to transmission objects;

a power reducing unit 420, configured to: when a sum of transmit powersacquired by the acquiring unit 410 for all the transmission objects inthe first transmission object set is greater than the maximum transmitpower of the user equipment, perform a power reduction operation basedon the priority sequence acquired by the acquiring unit 410 for theinformation corresponding to the transmission objects, so as to acquirean available transmit power of each transmission object in the firsttransmission object set, where a sum of available transmit powers of allthe transmission objects in the first transmission object set is lessthan or equal to the maximum transmit power of the user equipment;

a determining unit 430, configured to determine, from the firsttransmission object set and according to the available transmit poweracquired by the power reducing unit 420 for each transmission object inthe first transmission object set, a second transmission object set thatneeds to be scheduled, where an available transmit power of atransmission object in the second transmission object set is not 0; and

a scheduling unit 440, configured to perform scheduling for the userequipment according to the second transmission object set determined bythe determining unit 430.

Optionally, the acquiring unit 410 is specifically configured to:

acquire the priority sequence of the information corresponding to thetransmission objects, where the priority sequence of the informationcorresponding to the transmission objects includes at least one of thefollowing: a priority sequence of types of the transmission objects, apriority sequence of uplink control information UCI carried in thetransmission objects, and a priority sequence of carriers correspondingto the transmission objects.

Optionally, the power reducing unit 420 includes:

a determining subunit 422, configured to determine a priority of eachtransmission object in the first transmission object set according tothe priority sequence of the information corresponding to thetransmission objects and corresponding information of each transmissionobject in the first transmission object set; and

a power reducing subunit 426, configured to perform the power reductionoperation according to the priority determined by the determiningsubunit 422 for each transmission object in the first transmissionobject set.

Optionally, the power reducing subunit 426 is specifically configuredto:

perform the power reduction operation for the transmission objects inthe first transmission object set one by one according to the prioritiesof the transmission objects, with a transmission object of a lowestpriority being the first to undergo the power reduction, until a sum ofacquired available transmit powers of all the transmission objects inthe first transmission object set is less than or equal to the maximumtransmit power.

Optionally, the power reducing subunit 426 is specifically configuredto:

perform the power reduction operation for the transmission objects inthe first transmission object set one by one according to the prioritiesof the transmission objects, with a transmission object of a lowestpriority being the first to undergo the power reduction, until a sum ofacquired available transmit powers of all the transmission objects inthe first transmission object set is less than or equal to the maximumtransmit power, where when performing the power reduction for thetransmission objects in the first transmission object set one by oneaccording to the priorities of the transmission objects, with atransmission object of a lowest priority being the first to undergo thepower reduction, it is satisfied that if an available transmit power ofa transmission object with a priority of n is not 0, an availabletransmit power of a transmission object with a priority of n+1 is equalto an initial transmit power of the transmission object with thepriority of n+1, where m is the number of transmission objects in thefirst transmission object set, m≧n≧1, and a transmission object with apriority of 1 has a lowest priority.

Therefore, the base station in this embodiment of the present inventiondetermines a first transmission object set, where the first transmissionobject set includes all to-be-transmitted uplink channels and/or SRSs ofa user equipment; when it is determined that a sum of transmit powers ofall transmission objects in the first transmission object set is greaterthan a maximum transmit power of the user equipment, performs a powerreduction operation based on a priority sequence of informationcorresponding to the transmission objects, so as to acquire an availabletransmit power of each transmission object in the first transmissionobject set, where a sum of available transmit powers of all thetransmission objects in the first transmission object set is less thanor equal to the maximum transmit power of the user equipment;determines, according to the available transmit power of eachtransmission object in the first transmission object set, a secondtransmission object set that needs to be scheduled, where the availabletransmit power of each transmission object in the second transmissionobject set is not 0; and then performs scheduling for the user equipmentaccording to the second transmission object set, which can solve theproblem in which a sum of transmit powers of to-be-transmitted objectsof a user equipment is greater than a maximum transmit power of the userequipment.

FIG. 7 is a schematic block diagram of a user equipment 500 according toan embodiment of the present invention. As shown in FIG. 7, the userequipment 500 includes:

a processor 510, configured to acquire an initial transmit power of eachtransmission object in a transmission object set, and acquire a prioritysequence corresponding to the transmission objects and a maximumtransmit power, where the transmission object set includes allto-be-transmitted uplink channels and/or sounding reference signalsSRSs; when a sum of initial transmit powers of all the transmissionobjects in the transmission object set is greater than the maximumtransmit power, perform a power reduction operation based on thepriority sequence of the information corresponding to the transmissionobjects, so as to acquire an available transmit power of eachtransmission object in the transmission object set, where a sum ofavailable transmit powers of all the transmission objects in thetransmission object set is not greater than the maximum transmit power;and

a sender 520, configured to send each transmission object in thetransmission object set according to the available transmit power thatis acquired by the processor 510 and is corresponding to eachtransmission object in the transmission object set.

Optionally, the processor 510 is specifically configured to:

acquire the priority sequence of the information corresponding to thetransmission objects, where the priority sequence of the informationcorresponding to the transmission objects includes at least one of thefollowing: a priority sequence of types of the transmission objects, apriority sequence of UCI carried in the transmission objects, and apriority sequence of carriers corresponding to the transmission objects.

Optionally, the processor 510 is specifically configured to acquire thepriority sequence of the types of the transmission objects, where thepriority sequence of the types of the transmission objects includes atleast one of the following:

when a physical random access channel PRACH exists, the PRACH has ahighest priority;

when a physical uplink control channel PUCCH and a physical uplinkshared channel PUSCH coexist, a priority of the PUCCH is higher than apriority of the PUSCH, or a priority of the PUCCH is higher than apriority of a PUSCH not carrying UCI and is the same as a priority of aPUSCH carrying UCI;

when a PUSCH carrying uplink control information UCI and a PUSCH notcarrying UCI coexist, a priority of the PUSCH carrying UCI is higherthan a priority of the PUSCH not carrying UCI; and

when a PRACH, a PUCCH, a PUSCH, and an SRS coexist, the SRS has a lowestpriority.

Optionally, the processor 510 is specifically configured to:

acquire the priority sequence of the UCI carried in the transmissionobjects, where the priority sequence of the UCI carried in thetransmission objects includes at least one of the following:

when channel state information and a scheduling request exist, apriority of the channel state information is lower than a priority ofthe scheduling request; and

when hybrid automatic repeat request information and a schedulingrequest exist, a priority of the hybrid automatic repeat requestinformation is higher than or equal to a priority of the schedulingrequest.

Optionally, the processor 510 is specifically configured to:

acquire the priority sequence of the carriers corresponding to thetransmission objects, where the priority sequence of the carrierscorresponding to the transmission objects includes at least one of thefollowing: a priority sequence determined based on index sequencenumbers of the carriers, a carrier priority sequence configured by anupper layer, a priority sequence determined based on duplex modes of thecarriers, a priority sequence determined based on RRC connection statesof the carriers, and a priority sequence determined based ontransmission points corresponding to the carriers.

Optionally, the processor 510 is specifically configured to acquire thepriority sequence determined based on the RRC connection states of thecarriers, where the priority sequence determined based on the RRCconnection states of the carriers includes at least one of thefollowing:

a priority of a carrier supporting RRC connection is higher than apriority of a carrier not supporting RRC connection; and

a priority of a carrier carrying RRC information is higher than apriority of a carrier not carrying RRC information.

Optionally, the processor 510 is specifically configured to acquire thepriority sequence determined based on the duplex modes of the carriers,where the priority sequence determined based on the duplex modes of thecarriers includes that:

a priority of a carrier whose duplex mode is frequency division duplexFDD is lower than a priority of a carrier whose duplex mode is timedivision TDD.

Optionally, the processor 510 is specifically configured to acquire thepriority sequence of the information corresponding to the transmissionobjects, where the priority sequence of the information corresponding tothe transmission objects includes at least one of the following:

a priority of a PUCCH transmitted on a carrier whose duplex mode is FDDis lower than a priority of a PUCCH transmitted on a carrier whoseduplex mode is TDD, and both the PUCCH transmitted on the FDD carrierand the PUCCH transmitted on the TDD carrier carry hybrid automaticrepeat request information; and

a priority of a PUCCH transmitted on a carrier whose duplex mode is FDDis lower than a priority of a PUSCH that carries UCI and is transmittedon a carrier whose duplex mode is TDD, where the UCI in the UCI-carryingPUSCH transmitted on the TDD carrier includes hybrid automatic repeatrequest information.

Optionally, the processor 510 is specifically configured to:

determine a priority of each transmission object in the transmissionobject set according to the priority sequence of the informationcorresponding to the transmission objects and corresponding informationof each transmission object in the transmission object set, and performthe power reduction operation according to the priority of eachtransmission object in the transmission object set.

Optionally, the processor 510 is specifically configured to:

determine the priority of each transmission object in the transmissionobject set according to the priority sequence of the types of thetransmission objects and a type of each transmission object in thetransmission object set, where the priority sequence of the types of thetransmission objects is included in the priority sequence of theinformation corresponding to the transmission objects; and

when some of the transmission objects have a same priority after thepriority of the each transmission object in the transmission object setis determined according to a priority sequence of a type of atransmission object and a type of the each transmission object in thetransmission object set, determine a priority of each transmissionobject in same-priority transmission objects according to the prioritysequence of the UCI carried in the transmission objects and UCI of eachtransmission object in the same-priority transmission objects, where thepriority sequence of the UCI carried in the transmission objects isincluded in the priority sequence of the information corresponding tothe transmission objects, or

determining a priority of each transmission object in same-prioritytransmission objects according to the priority sequence of the carrierscorresponding to the transmission objects and a carrier corresponding toeach transmission object in the same-priority transmission objects,where the priority sequence of the carriers corresponding to thetransmission objects is included in the priority sequence of theinformation corresponding to the transmission objects.

Optionally, the processor 510 is specifically configured to:

perform the power reduction operation for the transmission objects inthe transmission object set one by one according to the priorities ofthe transmission objects, with a transmission object of a lowestpriority being the first to undergo the power reduction, until a sum ofacquired available transmit powers of all the transmission objects inthe transmission object set is less than or equal to the maximumtransmit power.

Optionally, the processor 510 is specifically configured to:

perform the power reduction operation for the transmission objects inthe transmission object set one by one according to the priorities ofthe transmission objects, with a transmission object of a lowestpriority being the first to undergo the power reduction, until a sum ofacquired available transmit powers of all the transmission objects inthe transmission object set is less than or equal to the maximumtransmit power, where when performing the power reduction for thetransmission objects in the transmission object set one by one accordingto the priorities of the transmission objects, with a transmissionobject of a lowest priority being the first to undergo the powerreduction, it is satisfied that if an available transmit power of atransmission object with a priority of n is not 0, an available transmitpower of a transmission object with a priority of n+1 is equal to aninitial transmit power of the transmission object with the priority ofn+1, where m is the number of transmission objects in the transmissionobject set, m≧n≧1, and a transmission object with a priority of 1 has alowest priority.

Optionally, the processor 510 is specifically configured to:

when multiple transmission objects have a same priority, perform equalpower reduction for the multiple transmission objects that have the samepriority.

Therefore, the user equipment in this embodiment of the presentinvention determines an initial transmit power of each transmissionobject in a transmission object set, where the transmission object setincludes all to-be-transmitted uplink channels and/or SRSs; when a sumof initial transmit powers of all the transmission objects in thetransmission object set is greater than a maximum transmit power,performs a power reduction operation based on a priority sequence ofinformation corresponding to the transmission objects, so as to acquirean available transmit power of each transmission object in thetransmission object set, where a sum of available transmit powers of allthe transmission objects in the transmission object set is not greaterthan the maximum transmit power; and sends each transmission object inthe transmission object set according to the available transmit powercorresponding to each transmission object in the transmission objectset, which can solve the problem in which a sum of transmit powers ofto-be-transmitted objects of a user equipment is greater than a maximumtransmit power of the user equipment.

FIG. 8 is a schematic block diagram of a base station 600 according toan embodiment of the present invention. As shown in FIG. 8, the basestation 600 includes:

a processor 610, configured to acquire a first transmission object set,where the first transmission object set includes all to-be-transmitteduplink channels and/or sounding reference signals SRSs of a userequipment, and to acquire a maximum transmit power of the user equipmentand a priority sequence of information corresponding to transmissionobjects; configured to: when a sum of transmit powers of all thetransmission objects in the first transmission object set is greaterthan the maximum transmit power of the user equipment, perform a powerreduction operation based on the priority sequence of the informationcorresponding to the transmission objects, so as to acquire an availabletransmit power of each transmission object in the first transmissionobject set, where a sum of available transmit powers of all thetransmission objects in the first transmission object set is less thanor equal to the maximum transmit power of the user equipment; configuredto determine, from the first transmission object set and according tothe available transmit power of each transmission object in the firsttransmission object set, a second transmission object set that needs tobe scheduled, where an available transmit power of a transmission objectin the second transmission object set is not 0; and configured todetermine scheduling information according to the second transmissionobject set; and

a sender 620, configured to send the scheduling information to the userequipment, so that the user equipment receives or sends data accordingto the scheduling information.

Optionally, the processor 610 is specifically configured to: acquire thepriority sequence of the information corresponding to the transmissionobjects, where the priority sequence of the information corresponding tothe transmission objects includes at least one of the following: apriority sequence of types of the transmission objects, a prioritysequence of uplink control information UCI carried in the transmissionobjects, and a priority sequence of carriers corresponding to thetransmission objects.

Optionally, the processor 610 is specifically configured to:

determine a priority of each transmission object in the firsttransmission object set according to the priority sequence of theinformation corresponding to the transmission objects and correspondinginformation of each transmission object in the first transmission objectset; and

perform the power reduction operation according to the priority of eachtransmission object in the first transmission object set.

Optionally, the processor 610 is specifically configured to: perform thepower reduction operation for the transmission objects in the firsttransmission object set one by one according to the priorities of thetransmission object, with a transmission object of a lowest prioritybeing the first to undergo the power reduction, until a sum of acquiredavailable transmit powers of all the transmission objects in the firsttransmission object set is less than or equal to the maximum transmitpower.

Optionally, the processor 610 is specifically configured to:

perform the power reduction operation for the transmission objects inthe first transmission object set one by one according to the prioritiesof the transmission object, with a transmission object of a lowestpriority being the first to undergo the power reduction, until a sum ofacquired available transmit powers of all the transmission objects inthe first transmission object set is less than or equal to the maximumtransmit power, where when performing the power reduction for thetransmission objects in the first transmission object set one by oneaccording to the priorities of the transmission object, with atransmission object of a lowest priority being the first to undergo thepower reduction, it is satisfied that if an available transmit power ofa transmission object with a priority of n is not 0, an availabletransmit power of a transmission object with a priority of n+1 is equalto an initial transmit power of the transmission object with thepriority of n+1, where m is the number of transmission objects in thefirst transmission object set, m≧n≧1, and a transmission object with apriority of 1 has a lowest priority.

Optionally, the processor 610 is specifically configured to:

when multiple transmission objects have a same priority, perform equalpower reduction for the multiple transmission objects that have the samepriority.

Therefore, the base station in this embodiment of the present inventiondetermines a first transmission object set, where the first transmissionobject set includes all to-be-transmitted uplink channels and/or SRSs ofa user equipment; when it is determined that a sum of transmit powers ofall transmission objects in the first transmission object set is greaterthan a maximum transmit power of the user equipment, performs a powerreduction operation based on a priority sequence of informationcorresponding to the transmission objects, so as to acquire an availabletransmit power of each transmission object in the first transmissionobject set, where a sum of available transmit powers of all thetransmission objects in the first transmission object set is less thanor equal to the maximum transmit power of the user equipment;determines, according to the available transmit power of eachtransmission object in the first transmission object set, a secondtransmission object set that needs to be scheduled, where the availabletransmit power of each transmission object in the second transmissionobject set is not 0; and then performs scheduling for the user equipmentaccording to the second transmission object set, which can solve theproblem in which a sum of transmit powers of to-be-transmitted objectsof a user equipment is greater than a maximum transmit power of the userequipment.

It should be understood that in appropriate situations, features in themethod embodiments of the present invention are applicable to the deviceembodiments of the present invention in proper cases, and vice versa.

A person of ordinary skill in the art may be aware that, in combinationwith the examples described in the embodiments disclosed in thisspecification, units and algorithm steps may be implemented byelectronic hardware or a combination of computer software and electronichardware. Whether the functions are performed by hardware or softwaredepends on particular applications and design constraint conditions ofthe technical solutions. A person skilled in the art may use differentmethods to implement the described functions for each particularapplication, but it should not be considered that the implementationgoes beyond the scope of the present invention.

It may be clearly understood by a person skilled in the art that, forthe purpose of convenient and brief description, for a detailed workingprocess of the foregoing system, apparatus, and unit, reference may bemade to a corresponding process in the foregoing method embodiments, anddetails are not described herein again.

In the several embodiments provided in the present application, itshould be understood that the disclosed system, apparatus, and methodmay be implemented in other manners. For example, the describedapparatus embodiment is merely exemplary. For example, the unit divisionis merely logical function division and may be other division in anactual implementation. For example, a plurality of units or componentsmay be combined or integrated into another system, or some features maybe ignored or not performed. In addition, the displayed or discussedmutual couplings or direct couplings or communication connections may beimplemented through some interfaces. The indirect couplings orcommunication connections between the apparatuses or units may beimplemented in electronic, mechanical, or other forms.

The units described as separate parts may or may not be physicallyseparate, and parts displayed as units may or may not be physical units,may be located in one position, or may be distributed on a plurality ofnetwork units. A part or all of the units may be selected according toactual needs to achieve the objectives of the solutions of theembodiments. In addition, functional units in the embodiments of thepresent invention may be integrated into one processing unit, or each ofthe units may exist alone physically, or two or more units areintegrated into one unit.

When the functions are implemented in the form of a software functionalunit and sold or used as an independent product, the functions may bestored in a computer-readable storage medium. Based on such anunderstanding, the technical solutions of the present inventionessentially, or the part contributing to the prior art, or a part of thetechnical solutions may be implemented in a form of a software product.The software product is stored in a storage medium, and includes severalinstructions for instructing a computer device (which may be a personalcomputer, a server, or a network device) to perform all or a part of thesteps of the methods described in the embodiments of the presentinvention. The foregoing storage medium includes any medium that canstore program code, such as a USB flash drive, a removable hard disk, aread-only memory (ROM), a random access memory (RAM,), a magnetic disk,or an optical disc.

The foregoing descriptions are merely specific implementations of thepresent invention, but are not intended to limit the protection scope ofthe present invention. Any variation or replacement readily figured outby a person skilled in the art within the technical scope disclosed inthe present invention shall fall within the protection scope of thepresent invention. Therefore, the protection scope of the presentinvention shall be subject to the protection scope of the claims.

What is claimed is:
 1. A power determining method, comprising:determining an initial transmit power of each transmission object in atransmission object set, wherein the transmission object set comprisesat least one of the following: (a) all to-be-transmitted uplink channelsand (b) sounding reference signals (SRSs); when a sum of initialtransmit powers of all transmission objects in the transmission objectset is greater than a maximum transmit power, performing a powerreduction operation based on a priority sequence of informationcorresponding to a transmission object, so as to acquire an availabletransmit power of each transmission object in the transmission objectset, wherein a sum of available transmit powers of all the transmissionobjects in the transmission object set is not greater than the maximumtransmit power; sending each transmission object in the transmissionobject set according to the available transmit power corresponding toeach transmission object in the transmission object set to a basestation; determining a priority of each transmission object in thetransmission object set according to the priority sequence of theinformation corresponding to the transmission object and correspondinginformation of each transmission object in the transmission object setcomprises at least one of the following groups (a) and (b): (a)determining a plurality of the transmission objects have a same priorityaccording to a priority sequence of a type of a transmission object anda type of each transmission object in the transmission object set,wherein the priority sequence of the type of a transmission objectcomprises the priority sequence of the information corresponding to thetransmission objects; and when a plurality of the transmission objectshave a same priority after determining the priority of the eachtransmission object in the transmission object set according to apriority sequence of a type of a transmission object and a type of theeach transmission object in the transmission object set, determining apriority of each transmission object in same-priority transmissionobjects according to a priority sequence of uplink control information(UCI) carried in a transmission object and the UCI of each transmissionobject in the same-priority transmission objects, wherein the prioritysequence of the UCI carried in the transmission object is comprised ofthe priority sequence of the information corresponding to thetransmission objects; and, (b) determining a priority of eachtransmission object in same-priority transmission objects according to apriority sequence of a carrier corresponding to a transmission objectand a carrier corresponding to each transmission object in thesame-priority transmission objects, wherein the priority sequence of thecarrier corresponding to the transmission object is comprised of thepriority sequence of the information corresponding to the transmissionobjects.
 2. The method according to claim 1, wherein the prioritysequence of the information corresponding to the transmission objectcomprises at least one of the following: a priority sequence of a typeof a transmission object, a priority sequence of UCI carried in atransmission object, and a priority sequence of a carrier correspondingto a transmission object.
 3. The method according to claim 2, whereinthe priority sequence of the type of the transmission object comprisesat least one of the following: when a physical random access channel(PRACH) exists, the PRACH has a highest priority; when a physical uplinkcontrol channel (PUCCH) and a physical uplink shared channel (PUSCH)coexist, a priority of the PUCCH is higher than a priority of the PUSCH,or a priority of the PUCCH is higher than a priority of a PUSCH notcarrying UCI and is the same as a priority of a PUSCH carrying UCI; whena PUSCH carrying UCI and a PUSCH not carrying UCI coexist, a priority ofthe PUSCH carrying UCI is higher than a priority of the PUSCH notcarrying UCI; and when a PRACH, a PUCCH, a PUSCH, and an SRS coexist,the SRS has a lowest priority.
 4. The method according to claim 2,wherein the priority sequence of the UCI carried in the transmissionobject comprises at least one of the following: when channel stateinformation and a scheduling request exist, a priority of the channelstate information is lower than a priority of the scheduling request;and when hybrid automatic repeat request information and a schedulingrequest exist, a priority of the hybrid automatic repeat requestinformation is higher than or equal to a priority of the schedulingrequest.
 5. The method according to claim 2, wherein the prioritysequence of the UCI carried in the transmission object comprises: apriority of UCI that has a highest priority among multiple UCI carriedin each transmission object.
 6. The method according to claim 2, whereinthe priority sequence of the carrier corresponding to the transmissionobject comprises at least one of the following: a priority sequencedetermined based on a index sequence number of the carrier, a carrierpriority sequence configured by an upper layer, a priority sequencedetermined based on a duplex mode of the carrier, a priority sequencedetermined based on a radio resource control (RRC) connection state of acarrier, and a priority sequence determined based on a transmissionpoint corresponding to a carrier.
 7. The method according to claim 6,wherein the priority sequence determined based on the RRC connectionstate of the carrier comprises at least one of the following: a priorityof a carrier supporting RRC connection is higher than a priority of acarrier not supporting RRC connection; and a priority of a carriercarrying RRC information is higher than a priority of a carrier notcarrying RRC information.
 8. The method according to claim 2, whereinthe priority sequence of a carrier corresponding to a transmissionobject comprises: a priority of a carrier corresponding to a macro basestation is higher than a priority of a carrier corresponding to a picobase station.
 9. The method according to claim 1, wherein the performingthe power reduction operation based on the priority sequence ofinformation corresponding to the transmission object comprises:performing the power reduction operation according to the priority ofeach transmission object in the transmission object set.
 10. The methodaccording to claim 9, wherein performing the power reduction operationaccording to the priority of each transmission object in thetransmission object set comprises: when multiple transmission objectshave a same priority, performing equal power reduction for the multipletransmission objects that have the same priority.
 11. The methodaccording to claim 9, wherein performing the power reduction operationaccording to the priority of each transmission object in thetransmission object set comprises: performing the power reductionoperation for the transmission objects in the transmission object setone by one according to the priorities of the transmission objects, witha transmission object of a lowest priority being the first to undergothe power reduction, until a sum of acquired available transmit powersof all the transmission objects in the transmission object set is lessthan or equal to the maximum transmit power.
 12. A user equipment,comprising: a processor, configured to acquire an initial transmit powerof each transmission object in a transmission object set, and acquire apriority sequence of information corresponding to the transmissionobjects and a maximum transmit power, wherein the transmission objectset comprises at least one of the following: (a) all to-be-transmitteduplink channels and (b) sounding reference signals (SRSs); when a sum ofinitial transmit powers of all the transmission objects in thetransmission object set is greater than the maximum transmit power,perform a power reduction operation based on the priority sequence ofthe information corresponding to a transmission object, so as to acquirean available transmit power of each transmission object in thetransmission object set, wherein a sum of available transmit powers ofall the transmission objects in the transmission object set is notgreater than the maximum transmit power; and a sender, configured tosend each transmission object in the transmission object set accordingto the available transmit power that is acquired by the processor and iscorresponding to each transmission object in the transmission object setto a base station; the processor is further configured to implement atleast one of (a) and (b) as follows: (a) determine a priority of eachtransmission object in the transmission object set according to thepriority sequence of the information corresponding to the transmissionobject and corresponding information of each transmission object in thetransmission object set, wherein the priority sequence of the type ofthe transmission object is comprised in the priority sequence of theinformation corresponding to the transmission object; and when aplurality of the transmission objects have a same priority after thepriority of the each transmission object in the transmission object setis determined according to a priority sequence of a type of atransmission object and a type of the each transmission object in thetransmission object set, determining a priority of each transmissionobject in same-priority transmission objects according to a prioritysequence of uplink control information (UCI) carried in a transmissionobject and UCI of each transmission object in the same-prioritytransmission objects, wherein the priority sequence of the UCI carriedin the transmission object is comprised of the priority sequence of theinformation corresponding to the transmission objects; and (b)determining a priority of each transmission object in same-prioritytransmission objects according to a priority sequence of a carriercorresponding to a transmission object and a carrier corresponding toeach transmission object in the same-priority transmission objects,wherein the priority sequence of the carrier corresponding to thetransmission object is comprised of the priority sequence of theinformation corresponding to the transmission objects.
 13. The userequipment according to claim 12, wherein the processor is configured to:acquire the priority sequence of the information corresponding to thetransmission object, wherein the priority sequence of the informationcorresponding to the transmission object comprises at least one of thefollowing: a priority sequence of a type of a transmission object, apriority sequence of UCI carried in a transmission object, and apriority sequence of a carrier corresponding to a transmission object.14. The user equipment according to claim 13, wherein the processor isconfigured to acquire the priority sequence of a type of a transmissionobject, wherein the priority sequence of the type of the transmissionobject comprises at least one of the following: when a physical randomaccess channel (PRACH) exists, the PRACH has a highest priority; when aphysical uplink control channel (PUCCH) and a physical uplink sharedchannel (PUSCH) coexist, a priority of the PUCCH is higher than apriority of the PUSCH, or a priority of the PUCCH is higher than apriority of a PUSCH not carrying UCI and is the same as a priority of aPUSCH carrying UCI; when a PUSCH carrying UCI and a PUSCH not carryingUCI coexist, a priority of the PUSCH carrying UCI is higher than apriority of the PUSCH not carrying UCI; and when a PRACH, a PUCCH, aPUSCH, and an SRS coexist, the SRS has a lowest priority.
 15. The userequipment according to claim 13, wherein the processor is configured toacquire the priority sequence of the UCI carried in the transmissionobject, wherein the priority sequence of the UCI carried in thetransmission object comprises at least one of the following: whenchannel state information and a scheduling request exist, a priority ofthe channel state information is lower than a priority of the schedulingrequest; and when hybrid automatic repeat request information and ascheduling request exist, a priority of the hybrid automatic repeatrequest information is higher than or equal to a priority of thescheduling request.
 16. The user equipment according to claim 13,wherein the processor is configured to acquire the priority sequence ofa type of a transmission object, wherein the priority sequence of thetype of the transmission object comprises: a priority of UCI that has ahighest priority among multiple UCI carried in each transmission object.17. The user equipment according to claim 16, wherein the processor isconfigured to acquire the priority sequence determined based on the RRCconnection state of the carrier, wherein the priority sequencedetermined based on the RRC connection state of the carrier comprises atleast one of the following: a priority of a carrier supporting RRCconnection is higher than a priority of a carrier not supporting RRCconnection; and a priority of a carrier carrying RRC information ishigher than a priority of a carrier not carrying RRC information. 18.The user equipment according to claim 13, wherein the processor isconfigured to acquire the priority sequence of the carrier correspondingto the transmission object, wherein the priority sequence of the carriercorresponding to the transmission object comprises at least one of thefollowing: a priority sequence determined based on a index sequencenumber of a carriers, a carrier priority sequence configured by an upperlayer, a priority sequence determined based on a duplex mode of acarrier, a priority sequence determined based on a radio resourceconnection (RRC) connection state of a carriers, and a priority sequencedetermined based on a transmission point corresponding to a carrier. 19.The user equipment according to claim 13, wherein the processor isconfigured to acquire the priority sequence of the carrier correspondingto the transmission object, wherein the priority sequence of the carriercorresponding to the transmission object comprises: a priority of acarrier corresponding to a macro base station is higher than a priorityof a carrier corresponding to a pico base station.
 20. The userequipment according to claim 12, wherein the processor is configured to:perform the power reduction operation according to the priority of eachtransmission object in the transmission object set.
 21. The userequipment according to claim 20, wherein the processor is configured to:perform the power reduction operation for the transmission objects inthe transmission object set one by one according to the priorities ofthe transmission objects, with a transmission object of a lowestpriority being the first to undergo the power reduction, until a sum ofacquired available transmit powers of all the transmission objects inthe transmission object set is less than or equal to the maximumtransmit power.
 22. The user equipment according to claim 20, whereinthe processor is specifically configured to: when multiple transmissionobjects have a same priority, perform equal power reduction for themultiple transmission objects that have the same priority.